| Nominal | 21318 |
| Cardinal | twenty-one thousand three hundred eighteen |
Cardinal twenty-one thousand three hundred eighteen | |
| Ordinal | 21,318th |
| Number of digits | 5 |
| Sum of digits | 15 |
| Product of digits | 48 |
| Number parity | Even |
| Prime factorization | 2 x 3 x 11 x 17 x 19 |
| Prime factors | 2, 3, 11, 17, 19 |
| Number of distinct prime factors ω(n) | 5 |
| Total number of prime factors Ω(n) | 5 |
| Sum of prime factors | 52 |
| Product of prime factors | 21318 |
| Is 21318 a prime number? | No |
| Is 21318 a semiprime number? | No |
| Is 21318 a Chen prime number? | No |
| Is 21318 a Mersenne prime number? | No |
| Is 21318 a Catalan number? | No |
| Is 21318 a Fibonacci number? | No |
| Is 21318 a Idoneal number? | No |
| Square of 21318 (n2) | 454457124 |
| Cube of 21318 (n3) | 9688116969432 |
| Square root of 21318 | 146.00684915441 |
| Natural Logarithm (ln) of 21318 | 9.9673070652491 |
| Decimal Logarithm (log) of 21318 | 4.328746457873 |
| Sine of 21318 | -0.7497917298765 |
| Cosecant of 21318 | -1.3337036941775 |
| Cosine of 21318 | 0.66167390896786 |
| Secant of 21318 | 1.5113184703926 |
| Tangent of 21318 | -1.13317409031 |
| Cotangent of 21318 | -0.88247693673129 |
| The spelling of 21318 in words is "twenty-one thousand three hundred eighteen", meaning that: |
| 21318 is not an aban number (as it contains the letter a) |
| 21318 is not an eban number (as it contains the letter e) |
| 21318 is not an iban number (as it contains the letter i) |
| 21318 is not an oban number (as it contains the letter o) |
| 21318 is not a tban number (as it contains the letter t) |
| 21318 is not an uban number (as it contains the letter u) |
| Bengali numerals | ২১৩১৮ |
| Eastern Arabic numerals | ٢١٬٣١٨ |
| Hieroglyphs numeralsused in Ancient Egypt | 𓂭𓂭𓆼𓍤𓎆𓐁 |
| Khmer numerals | ២១៣១៨ |
| Japanese numerals | 二万千三百十八 |
| Roman numerals | n/a |
| Thai numerals | ๒๑๓๑๘ |
| Arabic | واحد و عشرون ألف و ثلاثة مائة و ثمانية عشر |
| Croatian | dvadeset i jedna tisuća tristo osamnaest |
| Czech | dvacet jedna tisíc tři sta osmnáct |
| Danish | en og tyve tusinde tre hundrede atten |
| Dutch | éénentwintigduizend driehonderdachttien |
| Estonian | akpe blaeve vɔ ɖekɛ alafa etɔ̃ kple wuienyi |
| Faroese | tjúgoeitt tusin og trýhundraðogátjan |
| Filipino | dalawáng pû’t isáng libó’t tatlóng daán at labíng-waló |
| Finnish | kaksikymmentäyksituhattakolmesataakahdeksantoista |
| French | vingt et un mille trois cent dix-huit |
| Greek | είκοσι μία χίλιάδες τριακόσια δεκαοκτώ |
| German | einundzwanzigtausenddreihundertachtzehn |
| Hebrew | עשרים ואחד אלף שלוש מאות ושמונה עשרה |
| Hindi | इक्कीस हज़ार तीन सौ अठारह |
| Hungarian | huszonegyezerháromszáztizennyolc |
| Icelandic | tuttugu og eitt þúsund og þrjúhundrað og átján |
| Indonesian | dua puluh satu ribu tiga ratus delapan belas |
| Italian | ventunomilatrecentodiciotto |
| Japanese | 二万千三百十八 |
| Korean | 이만 천삼백십팔 |
| Latvian | divdesmit viens tūkstoši trīssimt astoņpadsmit |
| Lithuanian | dvidešimt vienas tūkstantis trys šimtai aštuoniolika |
| Norwegian | tjueett tusen tre hundre og atten |
| Persian | بیست و یک هزار و سیصد و هجده |
| Polish | dwadzieścia jeden tysięcy trzysta osiemnaście |
| Portuguese | vinte e um mil trezentos e dezoito |
| Romanian | douăzeci şi una mii trei sute optsprezece |
| Russian | двадцать одна тысяча триста восемнадцать |
| Serbian | двадесет и једна хиљада триста осамнаест |
| Slovak | dvadsaťjedna tisíc tristo osemnásť |
| Slovene | dvaset ena tisuću tristo asemnajst |
| Spanish | veintiún mil trescientos dieciocho |
| Swahili | elfu ishirini na moja, mia tatu na kumi na nane |
| Swedish | tjugoentusentrehundraarton |
| Thai | สองหมื่นหนึ่งพันสามร้อยสิบแปด |
| Turkish | yirmi bir bin üç yüz on sekiz |
| Ukrainian | двадцять одна тисяча триста вісімнадцять |
| Vietnamese | hai mươi mốt nghìn ba trăm mười tám |
| Number 21318 reversed | 81312 | |
| Unicode Character | U+5346 | 卆 |
| Unix Timestamp | Thu, 01 Jan 1970 05:55:18 +0000 | |