3131311879 has 16 divisors (see below), whose sum is σ = 3243110400. Its totient is φ = 3021676704.

The previous prime is 3131311877. The next prime is 3131311903. The reversal of 3131311879 is 9781131313.

It is a cyclic number.

It is not a de Polignac number, because 3131311879 - 2¹ = 3131311877 is a prime.

It is a super-2 number, since 2×3131311879² = 19610228167133021282, which 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 (3131311871) 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, 1150282 + ... + 1153000.

It is an arithmetic number, because the mean of its divisors is an integer number (202694400).

Almost surely, 2^3131311879 is an apocalyptic number.

3131311879 is a deficient number, since it is larger than the sum of its proper divisors (111798521).

3131311879 is a wasteful number, since it uses less digits than its factorization.

3131311879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3102.

The product of its digits is 13608, while the sum is 37.

The square root of 3131311879 is about 55958.1261212346. The cubic root of 3131311879 is about 1462.9925295989.

The spelling of 3131311879 in words is "three billion, one hundred thirty-one million, three hundred eleven thousand, eight hundred seventy-nine".