317983928 has 8 divisors (see below), whose sum is σ = 596219880. Its totient is φ = 158991960.

The previous prime is 317983909. The next prime is 317983933. The reversal of 317983928 is 829389713.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×317983928² = 202227556932618368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19873988 + ... + 19874003.

It is an arithmetic number, because the mean of its divisors is an integer number (74527485).

Almost surely, 2^317983928 is an apocalyptic number.

It is an amenable number.

317983928 is a deficient number, since it is larger than the sum of its proper divisors (278235952).

317983928 is a wasteful number, since it uses less digits than its factorization.

317983928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39747997 (or 39747993 counting only the distinct ones).

The product of its digits is 653184, while the sum is 50.

The square root of 317983928 is about 17832.1038579299. The cubic root of 317983928 is about 682.5509203601.

The spelling of 317983928 in words is "three hundred seventeen million, nine hundred eighty-three thousand, nine hundred twenty-eight".