317987964 has 96 divisors (see below), whose sum is σ = 965260800. Its totient is φ = 88629120.

The previous prime is 317987909. The next prime is 317987977. The reversal of 317987964 is 469789713.

It is a happy number.

It is a super-2 number, since 2×317987964² = 202232690497730592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 317987964.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25867 + ... + 36125.

It is an arithmetic number, because the mean of its divisors is an integer number (10054800).

Almost surely, 2^317987964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 317987964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (482630400).

317987964 is an abundant number, since it is smaller than the sum of its proper divisors (647272836).

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

317987964 is a wasteful number, since it uses less digits than its factorization.

317987964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10320 (or 10312 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 317987964 is about 17832.2170242514. The cubic root of 317987964 is about 682.5538080992.

The spelling of 317987964 in words is "three hundred seventeen million, nine hundred eighty-seven thousand, nine hundred sixty-four".