317561128 has 16 divisors (see below), whose sum is σ = 605520000. Its totient is φ = 156089136.

The previous prime is 317561081. The next prime is 317561147. The reversal of 317561128 is 821165713.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 317561093 and 317561102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335928 + ... + 336871.

It is an arithmetic number, because the mean of its divisors is an integer number (37845000).

Almost surely, 2^317561128 is an apocalyptic number.

It is an amenable number.

317561128 is a deficient number, since it is larger than the sum of its proper divisors (287958872).

317561128 is a wasteful number, since it uses less digits than its factorization.

317561128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672864 (or 672860 counting only the distinct ones).

The product of its digits is 10080, while the sum is 34.

The square root of 317561128 is about 17820.2448916955. The cubic root of 317561128 is about 682.2482734854.

The spelling of 317561128 in words is "three hundred seventeen million, five hundred sixty-one thousand, one hundred twenty-eight".