317872320 has 112 divisors (see below), whose sum is σ = 1013886720. Its totient is φ = 84376576.

The previous prime is 317872301. The next prime is 317872343. The reversal of 317872320 is 23278713.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251851 + ... + 253109.

It is an arithmetic number, because the mean of its divisors is an integer number (9052560).

Almost surely, 2^317872320 is an apocalyptic number.

317872320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 317872320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (506943360).

317872320 is an abundant number, since it is smaller than the sum of its proper divisors (696014400).

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

317872320 is a wasteful number, since it uses less digits than its factorization.

317872320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1542 (or 1532 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 317872320 is about 17828.9741712753. The cubic root of 317872320 is about 682.4710556765.

The spelling of 317872320 in words is "three hundred seventeen million, eight hundred seventy-two thousand, three hundred twenty".