313621318 has 16 divisors (see below), whose sum is σ = 481803264. Its totient is φ = 153039240.

The previous prime is 313621289. The next prime is 313621331. The reversal of 313621318 is 813126313.

It is a super-2 number, since 2×313621318² = 196716662208114248, 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 7 ways as a sum of consecutive naturals, for example, 29953 + ... + 39043.

It is an arithmetic number, because the mean of its divisors is an integer number (30112704).

Almost surely, 2^313621318 is an apocalyptic number.

313621318 is a deficient number, since it is larger than the sum of its proper divisors (168181946).

313621318 is a wasteful number, since it uses less digits than its factorization.

313621318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9507.

The product of its digits is 2592, while the sum is 28.

The square root of 313621318 is about 17709.3567923852. The cubic root of 313621318 is about 679.4150953638.

The spelling of 313621318 in words is "three hundred thirteen million, six hundred twenty-one thousand, three hundred eighteen".