odd, prime, palindrome · 131st positive integer
The number 131
131 is an odd prime number. It is the 131st positive integer.
Quick reference
| Prime factorization | 131 (prime) |
| Divisors | 1, 131 |
| Binary | 10000011 |
| Hexadecimal | 0x83 |
| Roman numeral | CXXXI |
| Digit sum | 5 |
| Properties | odd, prime, palindrome |
Frequently asked
Is 131 a prime number?
Yes. 131 is prime — its only divisors are 1 and itself.
What are the factors of 131?
The factors (divisors) of 131 are 1, 131.
What is 131 in binary?
131 in binary is 10000011. In hexadecimal it's 83.
What is 131 as a Roman numeral?
131 in Roman numerals is CXXXI.
What's the digit sum of 131?
Adding the digits of 131: 1 + 3 + 1 = 5.