317523138 has 16 divisors (see below), whose sum is σ = 635316096. Its totient is φ = 105796080.

The previous prime is 317523113. The next prime is 317523149. The reversal of 317523138 is 831325713.

It is a junction number, because it is equal to n+sod(n) for n = 317523099 and 317523108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6120 + ... + 25932.

It is an arithmetic number, because the mean of its divisors is an integer number (39707256).

Almost surely, 2^317523138 is an apocalyptic number.

317523138 is an abundant number, since it is smaller than the sum of its proper divisors (317792958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

317523138 is a wasteful number, since it uses less digits than its factorization.

317523138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22489.

The product of its digits is 15120, while the sum is 33.

The square root of 317523138 is about 17819.1789373136. The cubic root of 317523138 is about 682.2210664972.

The spelling of 317523138 in words is "three hundred seventeen million, five hundred twenty-three thousand, one hundred thirty-eight".