313815318 has 16 divisors (see below), whose sum is σ = 628156080. Its totient is φ = 104517536.

The previous prime is 313815311. The next prime is 313815323. The reversal of 313815318 is 813518313.

It is a super-2 number, since 2×313815318² = 196960107622882248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313815311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13905 + ... + 28652.

It is an arithmetic number, because the mean of its divisors is an integer number (39259755).

Almost surely, 2^313815318 is an apocalyptic number.

313815318 is an abundant number, since it is smaller than the sum of its proper divisors (314340762).

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

313815318 is a wasteful number, since it uses less digits than its factorization.

313815318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43791.

The product of its digits is 8640, while the sum is 33.

The square root of 313815318 is about 17714.8332760994. The cubic root of 313815318 is about 679.5551574415. Note that the first 3 decimals are identical.

The spelling of 313815318 in words is "three hundred thirteen million, eight hundred fifteen thousand, three hundred eighteen".