31 (number)
Appearance
| ||||
---|---|---|---|---|
Cardinal | thirty-one | |||
Ordinal | 31st (thirty-first) | |||
Factorization | prime | |||
Greek numeral | ΛΑ´ | |||
Roman numeral | XXXI | |||
Binary | 111112 | |||
Ternary | 10113 | |||
Quaternary | 1334 | |||
Quinary | 1115 | |||
Senary | 516 | |||
Octal | 378 | |||
Duodecimal | 2712 | |||
Hexadecimal | 1F16 | |||
Vigesimal | 1B20 | |||
Base 36 | V36 |
31 (thirty-one) is a number. It comes between thirty and thirty-two, and is an odd number. It is also the 11th prime number, after 2, 3, 5, 7, 11, 13, 17, 19, 23, and 29.
The factors of thirty-one are 1 and 31.
In Roman Numerals, 31 is written as XXXI.