317513217 has 16 divisors (see below), whose sum is σ = 484807680. Its totient is φ = 181069392.

The previous prime is 317513213. The next prime is 317513219. The reversal of 317513217 is 712315713.

It is not a de Polignac number, because 317513217 - 2² = 317513213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (317513213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4467 + ... + 25592.

It is an arithmetic number, because the mean of its divisors is an integer number (30300480).

Almost surely, 2^317513217 is an apocalyptic number.

It is an amenable number.

317513217 is a deficient number, since it is larger than the sum of its proper divisors (167294463).

317513217 is a wasteful number, since it uses less digits than its factorization.

317513217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30572.

The product of its digits is 4410, while the sum is 30.

The square root of 317513217 is about 17818.9005553092. The cubic root of 317513217 is about 682.2139610983.

The spelling of 317513217 in words is "three hundred seventeen million, five hundred thirteen thousand, two hundred seventeen".