| Nominal | 81380 |
| Cardinal | eighty-one thousand three hundred eighty |
Cardinal eighty-one thousand three hundred eighty | |
| Ordinal | 81,380th |
| Number of digits | 5 |
| Sum of digits | 20 |
| Product of digits | 0 |
| Number parity | Even |
| Prime factorization | 2 x 2 x 5 x 13 x 313 |
| Prime factorization in exponent form | 22 x 5 x 13 x 313 |
| Prime factors | 2, 5, 13, 313 |
| Number of distinct prime factors ω(n) | 4 |
| Total number of prime factors Ω(n) | 5 |
| Sum of prime factors | 333 |
| Product of prime factors | 40690 |
| Is 81380 a prime number? | No |
| Is 81380 a semiprime number? | No |
| Is 81380 a Chen prime number? | No |
| Is 81380 a Mersenne prime number? | No |
| Is 81380 a Catalan number? | No |
| Is 81380 a Fibonacci number? | No |
| Is 81380 a Idoneal number? | No |
| Square of 81380 (n2) | 6622704400 |
| Cube of 81380 (n3) | 538955684072000 |
| Square root of 81380 | 285.27180021867 |
| Natural Logarithm (ln) of 81380 | 11.306884821556 |
| Decimal Logarithm (log) of 81380 | 4.9105176855173 |
| Sine of 81380 | 0.18286657880317 |
| Cosecant of 81380 | 5.4684678115861 |
| Cosine of 81380 | 0.98313773925978 |
| Secant of 81380 | 1.017151473356 |
| Tangent of 81380 | 0.18600301005722 |
| Cotangent of 81380 | 5.3762570814976 |
| The spelling of 81380 in words is "eighty-one thousand three hundred eighty", meaning that: |
| 81380 is not an aban number (as it contains the letter a) |
| 81380 is not an eban number (as it contains the letter e) |
| 81380 is not an iban number (as it contains the letter i) |
| 81380 is not an oban number (as it contains the letter o) |
| 81380 is not a tban number (as it contains the letter t) |
| 81380 is not an uban number (as it contains the letter u) |
| Bengali numerals | ৮১৩৮০ |
| Eastern Arabic numerals | ٨١٬٣٨٠ |
| Hieroglyphs numeralsused in Ancient Egypt | 𓂭𓂭𓂭𓂭𓂭𓂭𓂭𓂭𓆼𓍤𓎍 |
| Khmer numerals | ៨១៣៨០ |
| Japanese numerals | 八万千三百八十 |
| Roman numerals | n/a |
| Thai numerals | ๘๑๓๘๐ |
| Arabic | واحد و ثمانون ألف و ثلاثة مائة و ثمانون |
| Croatian | osamdeset i jedna tisuća tristo osamdeset |
| Czech | osmdesát jedna tisíc tři sta osmdesát |
| Danish | en og firs tusinde tre hundrede firs |
| Dutch | éénentachtigduizend driehonderdtachtig |
| Estonian | akpe blaenyi vɔ ɖekɛ alafa etɔ̃ kple blaenyi |
| Faroese | áttatieitt tusin og trýhundraðogáttati |
| Filipino | walóng pû’t isáng libó’t tatlóng daán at walóng pû |
| Finnish | kahdeksankymmentäyksituhattakolmesataakahdeksankymmentä |
| French | quatre-vingt-un mille trois cent quatre-vingts |
| Greek | ογδόντα μία χίλιάδες τριακόσια ογδόντα |
| German | einundachtzigtausenddreihundertachtzig |
| Hebrew | שמונים ואחד אלף שלוש מאות שמונים |
| Hindi | इक्यासी हज़ार तीन सौ अस्सी |
| Hungarian | nyolcvanegyezerháromszáznyolcvan |
| Icelandic | áttatíu og eitt þúsund og þrjúhundrað og áttatíu |
| Indonesian | delapan puluh satu ribu tiga ratus delapan puluh |
| Italian | ottant e unmilatrecentoottanta |
| Japanese | 八万千三百八十 |
| Korean | 팔만 천삼백팔십 |
| Latvian | astoņdesmit viens tūkstoši trīssimt astoņdesmit |
| Lithuanian | aštuoniasdešimt vienas tūkstantis trys šimtai aštuoniasdešimt |
| Norwegian | åttiett tusen tre hundre og åtti |
| Persian | هشتاد و یک هزار و سیصد و هشتاد |
| Polish | osiemdziesiąt jeden tysięcy trzysta osiemdziesiąt |
| Portuguese | oitenta e um mil trezentos e oitenta |
| Romanian | optzeci şi una mii trei sute optzeci |
| Russian | восемьдесят одна тысяча триста восемьдесят |
| Serbian | осамдесет и једна хиљада триста осамдесет |
| Slovak | osemdesiatjedna tisíc tristo osemdesiat |
| Slovene | osemdeset ena tisuću tristo osemdeset |
| Spanish | ochenta y un mil trescientos ochenta |
| Swahili | elfu themanini na moja, mia tatu na themanini |
| Swedish | åttioentusentrehundraåttio |
| Thai | แปดหมื่นหนึ่งพันสามร้อยแปดสิบ |
| Turkish | seksen bir bin üç yüz seksen |
| Ukrainian | вісімдесят одна тисяча триста вісімдесят |
| Vietnamese | tám mươi mốt nghìn ba trăm tám mươi |
| Number 81380 reversed | 08318 | |
| Unicode Character | U+13DE4 | |
| Unix Timestamp | Thu, 01 Jan 1970 22:36:20 +0000 | |