318856331311 has 16 divisors (see below), whose sum is σ = 389589018624. Its totient is φ = 254731261824.

The previous prime is 318856331207. The next prime is 318856331323. The reversal of 318856331311 is 113133658813.

It is not a de Polignac number, because 318856331311 - 2²¹ = 318854234159 is a prime.

It is a super-2 number, since 2×318856331311² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318856331351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12994855 + ... + 13019368.

It is an arithmetic number, because the mean of its divisors is an integer number (24349313664).

Almost surely, 2^318856331311 is an apocalyptic number.

318856331311 is a deficient number, since it is larger than the sum of its proper divisors (70732687313).

318856331311 is a wasteful number, since it uses less digits than its factorization.

318856331311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26014350.

The product of its digits is 155520, while the sum is 43.

The spelling of 318856331311 in words is "three hundred eighteen billion, eight hundred fifty-six million, three hundred thirty-one thousand, three hundred eleven".