| Nominal | 18321 |
| Cardinal | eighteen thousand three hundred twenty-one |
Cardinal eighteen thousand three hundred twenty-one | |
| Ordinal | 18,321st |
| Number of digits | 5 |
| Sum of digits | 15 |
| Product of digits | 48 |
| Number parity | Odd |
| Prime factorization | 3 x 31 x 197 |
| Prime factors | 3, 31, 197 |
| Number of distinct prime factors ω(n) | 3 |
| Total number of prime factors Ω(n) | 3 |
| Sum of prime factors | 231 |
| Product of prime factors | 18321 |
| Is 18321 a prime number? | No |
| Is 18321 a semiprime number? | No |
| Is 18321 a Chen prime number? | No |
| Is 18321 a Mersenne prime number? | No |
| Is 18321 a Catalan number? | No |
| Is 18321 a Fibonacci number? | No |
| Is 18321 a Idoneal number? | No |
| Square of 18321 (n2) | 335659041 |
| Cube of 18321 (n3) | 6149609290161 |
| Square root of 18321 | 135.35508856338 |
| Natural Logarithm (ln) of 18321 | 9.8158032218912 |
| Decimal Logarithm (log) of 18321 | 4.2629491747155 |
| Sine of 18321 | -0.69495386321888 |
| Cosecant of 18321 | -1.4389444435465 |
| Cosine of 18321 | 0.71905432896072 |
| Secant of 18321 | 1.3907154991269 |
| Tangent of 18321 | -0.96648310875665 |
| Cotangent of 18321 | -1.0346792312661 |
| The spelling of 18321 in words is "eighteen thousand three hundred twenty-one", meaning that: |
| 18321 is not an aban number (as it contains the letter a) |
| 18321 is not an eban number (as it contains the letter e) |
| 18321 is not an iban number (as it contains the letter i) |
| 18321 is not an oban number (as it contains the letter o) |
| 18321 is not a tban number (as it contains the letter t) |
| 18321 is not an uban number (as it contains the letter u) |
| Bengali numerals | ১৮৩২১ |
| Eastern Arabic numerals | ١٨٬٣٢١ |
| Hieroglyphs numeralsused in Ancient Egypt | 𓂭𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍤𓎇𓏺 |
| Khmer numerals | ១៨៣២១ |
| Japanese numerals | 一万八千三百二十一 |
| Roman numerals | n/a |
| Thai numerals | ๑๘๓๒๑ |
| Arabic | ثمانية عشر ألف و ثلاثة مائة و واحد و عشرون |
| Croatian | osamnaest tisuća tristo dvadeset i jedan |
| Czech | osmnáct tisíc tři sta dvacet jeden |
| Danish | atten tusinde tre hundrede en og tyve |
| Dutch | achttienduizend driehonderdéénentwintig |
| Estonian | akpe wuienyi alafa etɔ̃ blaeve vɔ ɖekɛ |
| Faroese | átjan tusin og trýhundraðogtjúgoein |
| Filipino | labíng-walóng libó’t tatlóng daán at dalawáng pû’t isá |
| Finnish | kahdeksantoistatuhattakolmesataakaksikymmentäyksi |
| French | dix-huit mille trois cent vingt et un |
| Greek | δεκαοκτώ χίλιάδες τριακόσια είκοσι ένα |
| German | achtzehntausenddreihunderteinundzwanzig |
| Hebrew | שמונה עשר אלף שלוש מאות עשרים ואחת |
| Hindi | अठारह हज़ार तीन सौ इक्कीस |
| Hungarian | tizennyolcezerháromszázhuszonegy |
| Icelandic | átján þúsund og þrjúhundrað og tuttugu og einn |
| Indonesian | delapan belas ribu tiga ratus dua puluh satu |
| Italian | diciottomilatrecentoventuno |
| Japanese | 一万八千三百二十一 |
| Korean | 만 팔천삼백이십일 |
| Latvian | astoņpadsmit tūkstoši trīssimt divdesmit viens |
| Lithuanian | aštuoniolika tūkstančių trys šimtai dvidešimt vienas |
| Norwegian | atten tusen tre hundre og tjueén |
| Persian | هجده هزار و سیصد و بیست و یک |
| Polish | osiemnaście tysięcy trzysta dwadzieścia jeden |
| Portuguese | dezoito mil trezentos e vinte e um |
| Romanian | optsprezece mii trei sute douăzeci şi unu |
| Russian | восемнадцать тысяч триста двадцать один |
| Serbian | осамнаест хиљада триста двадесет и један |
| Slovak | osemnásť tisíc tristo dvadsaťjeden |
| Slovene | asemnajst tisuću tristo dvaset ena |
| Spanish | dieciocho mil trescientos veintiuno |
| Swahili | elfu kumi na nane, mia tatu na ishirini na moja |
| Swedish | artontusentrehundratjugoen |
| Thai | หนึ่งหมื่นแปดพันสามร้อยยี่สิบเอ็ด |
| Turkish | on sekiz bin üç yüz yirmi bir |
| Ukrainian | вісімнадцять тисяч триста двадцять один |
| Vietnamese | mười tám nghìn ba trăm hai mươi mốt |
| Number 18321 reversed | 12381 | |
| Unicode Character | U+4791 | 䞑 |
| Unix Timestamp | Thu, 01 Jan 1970 05:05:21 +0000 | |