313939813 has 16 divisors (see below), whose sum is σ = 346608000. Its totient is φ = 281983680.

The previous prime is 313939807. The next prime is 313939841. The reversal of 313939813 is 318939313.

It is not a de Polignac number, because 313939813 - 2²⁵ = 280385381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313939853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 378283 + ... + 379111.

It is an arithmetic number, because the mean of its divisors is an integer number (21663000).

Almost surely, 2^313939813 is an apocalyptic number.

It is an amenable number.

313939813 is a deficient number, since it is larger than the sum of its proper divisors (32668187).

313939813 is a wasteful number, since it uses less digits than its factorization.

313939813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212.

The product of its digits is 52488, while the sum is 40.

The square root of 313939813 is about 17718.3467908267. The cubic root of 313939813 is about 679.6450086262.

The spelling of 313939813 in words is "three hundred thirteen million, nine hundred thirty-nine thousand, eight hundred thirteen".