317023139 has 2 divisors, whose sum is σ = 317023140. Its totient is φ = 317023138.

The previous prime is 317023097. The next prime is 317023169. The reversal of 317023139 is 931320713.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-317023139 is a prime.

It is a super-2 number, since 2×317023139² = 201007341322826642, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (317023169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158511569 + 158511570.

It is an arithmetic number, because the mean of its divisors is an integer number (158511570).

Almost surely, 2^317023139 is an apocalyptic number.

317023139 is a deficient number, since it is larger than the sum of its proper divisors (1).

317023139 is an equidigital number, since it uses as much as digits as its factorization.

317023139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 29.

The square root of 317023139 is about 17805.1436107660. The cubic root of 317023139 is about 681.8627838884.

The spelling of 317023139 in words is "three hundred seventeen million, twenty-three thousand, one hundred thirty-nine".