313151131 has 2 divisors, whose sum is σ = 313151132. Its totient is φ = 313151130.

The previous prime is 313151117. The next prime is 313151143. The reversal of 313151131 is 131151313.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313151131 is a prime.

It is a super-2 number, since 2×313151131² = 196127261693158322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 313151099 and 313151108.

It is not a weakly prime, because it can be changed into another prime (313151161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156575565 + 156575566.

It is an arithmetic number, because the mean of its divisors is an integer number (156575566).

Almost surely, 2^313151131 is an apocalyptic number.

313151131 is a deficient number, since it is larger than the sum of its proper divisors (1).

313151131 is an equidigital number, since it uses as much as digits as its factorization.

313151131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 135, while the sum is 19.

The square root of 313151131 is about 17696.0767120851. The cubic root of 313151131 is about 679.0753949001.

The spelling of 313151131 in words is "three hundred thirteen million, one hundred fifty-one thousand, one hundred thirty-one".