| Nominal | 12391 |
| Cardinal | twelve thousand three hundred ninety-one |
Cardinal twelve thousand three hundred ninety-one | |
| Ordinal | 12,391st |
| Number of digits | 5 |
| Sum of digits | 16 |
| Product of digits | 54 |
| Number parity | Odd |
| Prime factorization | 12391 |
| Prime factors | 12391 |
| Number of distinct prime factors ω(n) | 1 |
| Total number of prime factors Ω(n) | 1 |
| Sum of prime factors | 12391 |
| Product of prime factors | 12391 |
| Is 12391 a prime number? | Yes |
| Is 12391 a semiprime number? | No |
| Is 12391 a Chen prime number? | No |
| Is 12391 a Mersenne prime number? | No |
| Is 12391 a Catalan number? | No |
| Is 12391 a Fibonacci number? | No |
| Is 12391 a Idoneal number? | No |
| Square of 12391 (n2) | 153536881 |
| Cube of 12391 (n3) | 1902475492471 |
| Square root of 12391 | 111.31486872831 |
| Natural Logarithm (ln) of 12391 | 9.4247256816165 |
| Decimal Logarithm (log) of 12391 | 4.0931063569779 |
| Sine of 12391 | 0.5299776775612 |
| Cosecant of 12391 | 1.8868719237416 |
| Cosine of 12391 | 0.84801159266064 |
| Secant of 12391 | 1.17922916226 |
| Tangent of 12391 | 0.62496513272701 |
| Cotangent of 12391 | 1.6000892651987 |
| The spelling of 12391 in words is "twelve thousand three hundred ninety-one", meaning that: |
| 12391 is not an aban number (as it contains the letter a) |
| 12391 is not an eban number (as it contains the letter e) |
| 12391 is not an iban number (as it contains the letter i) |
| 12391 is not an oban number (as it contains the letter o) |
| 12391 is not a tban number (as it contains the letter t) |
| 12391 is not an uban number (as it contains the letter u) |
| Bengali numerals | ১২৩৯১ |
| Eastern Arabic numerals | ١٢٬٣٩١ |
| Hieroglyphs numeralsused in Ancient Egypt | 𓂭𓆼𓆼𓍤𓎎𓏺 |
| Khmer numerals | ១២៣៩១ |
| Japanese numerals | 一万二千三百九十一 |
| Roman numerals | n/a |
| Thai numerals | ๑๒๓๙๑ |
| Arabic | إثنا عشر ألف و ثلاثة مائة و واحد و تسعون |
| Croatian | dvanaest tisuća tristo devedeset i jedan |
| Czech | dvanáct tisíc tři sta devadesát jeden |
| Danish | tolv tusinde tre hundrede en og halvfems |
| Dutch | twaalfduizend driehonderdéénennegentig |
| Estonian | akpe wuieve alafa etɔ̃ blaasieke vɔ ɖekɛ |
| Faroese | tólv tusin og trýhundraðognítiein |
| Filipino | labíng-dalawáng libó’t tatlóng daán at siyám na pû’t isá |
| Finnish | kaksitoistatuhattakolmesataayhdeksänkymmentäyksi |
| French | douze mille trois cent quatre-vingt-onze |
| Greek | δώδεκα χίλιάδες τριακόσια εννενήντα ένα |
| German | zwölftausenddreihunderteinundneunzig |
| Hebrew | שניים עשר אלף שלוש מאות תשעים ואחת |
| Hindi | बारह हज़ार तीन सौ इक्यानबे |
| Hungarian | tizenkettőezerháromszázkilencvenegy |
| Icelandic | tólf þúsund og þrjúhundrað og níutíu og einn |
| Indonesian | dua belas ribu tiga ratus sembilan puluh satu |
| Italian | dodicimilatrecentonovantuno |
| Japanese | 一万二千三百九十一 |
| Korean | 만 이천삼백구십일 |
| Latvian | divpadsmit tūkstoši trīssimt deviņdesmit viens |
| Lithuanian | dvylika tūkstančių trys šimtai devyniasdešimt vienas |
| Norwegian | tolv tusen tre hundre og nittién |
| Persian | دوازده هزار و سیصد و نود و یک |
| Polish | dwanaście tysięcy trzysta dziewięćdziesiąt jeden |
| Portuguese | doze mil trezentos e noventa e um |
| Romanian | douăsprezece mii trei sute nouăzeci şi unu |
| Russian | двенадцать тысяч триста девяносто один |
| Serbian | дванаест хиљада триста деведесет и један |
| Slovak | dvanásť tisíc tristo deväťdesiatjeden |
| Slovene | dvanajst tisuću tristo devetdeset ena |
| Spanish | doce mil trescientos noventa y uno |
| Swahili | elfu kumi na mbili, mia tatu na tisini na moja |
| Swedish | tolvtusentrehundranittioen |
| Thai | หนึ่งหมื่นสองพันสามร้อยเก้าสิบเอ็ด |
| Turkish | on iki bin üç yüz doksan bir |
| Ukrainian | дванадцять тисяч триста девʼяносто один |
| Vietnamese | mười hai nghìn ba trăm chín mươi mốt |
| Number 12391 reversed | 19321 | |
| Unicode Character | U+3067 | で |
| Unix Timestamp | Thu, 01 Jan 1970 03:26:31 +0000 | |