311372313 has 16 divisors (see below), whose sum is σ = 484156800. Its totient is φ = 177926448.

The previous prime is 311372311. The next prime is 311372317. The reversal of 311372313 is 313273113.

It is not a de Polignac number, because 311372313 - 2¹ = 311372311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311372311) 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 15 ways as a sum of consecutive naturals, for example, 150270 + ... + 152327.

It is an arithmetic number, because the mean of its divisors is an integer number (30259800).

Almost surely, 2^311372313 is an apocalyptic number.

It is an amenable number.

311372313 is a deficient number, since it is larger than the sum of its proper divisors (172784487).

311372313 is an equidigital number, since it uses as much as digits as its factorization.

311372313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302621 (or 302607 counting only the distinct ones).

The product of its digits is 1134, while the sum is 24.

The square root of 311372313 is about 17645.7448978500. The cubic root of 311372313 is about 677.7871500560.

The spelling of 311372313 in words is "three hundred eleven million, three hundred seventy-two thousand, three hundred thirteen".