317407231 has 2 divisors, whose sum is σ = 317407232. Its totient is φ = 317407230.

The previous prime is 317407229. The next prime is 317407241. The reversal of 317407231 is 132704713.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 317407231 - 2¹ = 317407229 is a prime.

It is a super-2 number, since 2×317407231² = 201494700582174722, which contains 22 as substring.

Together with 317407229, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 317407231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (317407241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158703615 + 158703616.

It is an arithmetic number, because the mean of its divisors is an integer number (158703616).

Almost surely, 2^317407231 is an apocalyptic number.

317407231 is a deficient number, since it is larger than the sum of its proper divisors (1).

317407231 is an equidigital number, since it uses as much as digits as its factorization.

317407231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 317407231 is about 17815.9263301126. The cubic root of 317407231 is about 682.1380449142.

The spelling of 317407231 in words is "three hundred seventeen million, four hundred seven thousand, two hundred thirty-one".