313843920 has 80 divisors (see below), whose sum is σ = 1047766272. Its totient is φ = 77253120.

The previous prime is 313843913. The next prime is 313843961. The reversal of 313843920 is 29348313.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×313843920² = 196996012241932800, which contains 22 as substring.

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, 47176 + ... + 53415.

Almost surely, 2^313843920 is an apocalyptic number.

313843920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

313843920 is an abundant number, since it is smaller than the sum of its proper divisors (733922352).

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

313843920 is a wasteful number, since it uses less digits than its factorization.

313843920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100620 (or 100614 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 313843920 is about 17715.6405472678. The cubic root of 313843920 is about 679.5758023293.

The spelling of 313843920 in words is "three hundred thirteen million, eight hundred forty-three thousand, nine hundred twenty".