317972808 has 48 divisors (see below), whose sum is σ = 862255680. Its totient is φ = 105858144.

The previous prime is 317972807. The next prime is 317972819. The reversal of 317972808 is 808279713.

It is a super-2 number, since 2×317972808² = 202213413254809728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (317972807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67341 + ... + 71907.

It is an arithmetic number, because the mean of its divisors is an integer number (17963660).

Almost surely, 2^317972808 is an apocalyptic number.

It is an amenable number.

317972808 is an abundant number, since it is smaller than the sum of its proper divisors (544282872).

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

317972808 is a wasteful number, since it uses less digits than its factorization.

317972808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5546 (or 5539 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 317972808 is about 17831.7920580070. The cubic root of 317972808 is about 682.5429639258.

The spelling of 317972808 in words is "three hundred seventeen million, nine hundred seventy-two thousand, eight hundred eight".