316431431 has 2 divisors, whose sum is σ = 316431432. Its totient is φ = 316431430.

The previous prime is 316431397. The next prime is 316431443. The reversal of 316431431 is 134134613.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-316431431 is a prime.

It is a super-2 number, since 2×316431431² = 200257701049415522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 316431431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316434431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158215715 + 158215716.

It is an arithmetic number, because the mean of its divisors is an integer number (158215716).

Almost surely, 2^316431431 is an apocalyptic number.

316431431 is a deficient number, since it is larger than the sum of its proper divisors (1).

316431431 is an equidigital number, since it uses as much as digits as its factorization.

316431431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 26.

The square root of 316431431 is about 17788.5196404872. The cubic root of 316431431 is about 681.4382986379.

The spelling of 316431431 in words is "three hundred sixteen million, four hundred thirty-one thousand, four hundred thirty-one".