317320497 has 20 divisors (see below), whose sum is σ = 510486900. Its totient is φ = 195273504.

The previous prime is 317320483. The next prime is 317320499. The reversal of 317320497 is 794023713.

It can be written as a sum of positive squares in 2 ways, for example, as 137733696 + 179586801 = 11736^2 + 13401^2 .

It is not a de Polignac number, because 317320497 - 2⁴ = 317320481 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (317320499) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 149622 + ... + 151727.

It is an arithmetic number, because the mean of its divisors is an integer number (25524345).

Almost surely, 2^317320497 is an apocalyptic number.

It is an amenable number.

317320497 is a deficient number, since it is larger than the sum of its proper divisors (193166403).

317320497 is a wasteful number, since it uses less digits than its factorization.

317320497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301374 (or 301365 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 317320497 is about 17813.4919934301. The cubic root of 317320497 is about 682.0759060746.

The spelling of 317320497 in words is "three hundred seventeen million, three hundred twenty thousand, four hundred ninety-seven".