317263128 has 64 divisors (see below), whose sum is σ = 976200960. Its totient is φ = 83673216.

The previous prime is 317263117. The next prime is 317263147. The reversal of 317263128 is 821362713.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 70450 + ... + 74817.

It is an arithmetic number, because the mean of its divisors is an integer number (15253140).

Almost surely, 2^317263128 is an apocalyptic number.

It is an amenable number.

317263128 is an abundant number, since it is smaller than the sum of its proper divisors (658937832).

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

317263128 is a wasteful number, since it uses less digits than its factorization.

317263128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145296 (or 145292 counting only the distinct ones).

The product of its digits is 12096, while the sum is 33.

The square root of 317263128 is about 17811.8816524252. The cubic root of 317263128 is about 682.0347989800.

The spelling of 317263128 in words is "three hundred seventeen million, two hundred sixty-three thousand, one hundred twenty-eight".