317120556 has 12 divisors (see below), whose sum is σ = 739947992. Its totient is φ = 105706848.

The previous prime is 317120543. The next prime is 317120561. The reversal of 317120556 is 655021713.

It is a tau number, because it is divible by the number of its divisors (12).

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 in 3 ways as a sum of consecutive naturals, for example, 13213345 + ... + 13213368.

Almost surely, 2^317120556 is an apocalyptic number.

It is an amenable number.

317120556 is an abundant number, since it is smaller than the sum of its proper divisors (422827436).

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

317120556 is a wasteful number, since it uses less digits than its factorization.

317120556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26426720 (or 26426718 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 317120556 is about 17807.8790427159. The cubic root of 317120556 is about 681.9326191948.

The spelling of 317120556 in words is "three hundred seventeen million, one hundred twenty thousand, five hundred fifty-six".