317978312 has 64 divisors (see below), whose sum is σ = 644474880. Its totient is φ = 146715712.

The previous prime is 317978273. The next prime is 317978351. The reversal of 317978312 is 213879713.

It is an interprime number because it is at equal distance from previous prime (317978273) and next prime (317978351).

It is a super-2 number, since 2×317978312² = 202220413804738688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 317978312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 717563 + ... + 718005.

It is an arithmetic number, because the mean of its divisors is an integer number (10069920).

Almost surely, 2^317978312 is an apocalyptic number.

It is an amenable number.

317978312 is an abundant number, since it is smaller than the sum of its proper divisors (326496568).

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

317978312 is a wasteful number, since it uses less digits than its factorization.

317978312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602 (or 598 counting only the distinct ones).

The product of its digits is 63504, while the sum is 41.

The square root of 317978312 is about 17831.9463884344. The cubic root of 317978312 is about 682.5469020977.

The spelling of 317978312 in words is "three hundred seventeen million, nine hundred seventy-eight thousand, three hundred twelve".