3131312542 has 32 divisors (see below), whose sum is σ = 4907612160. Its totient is φ = 1496763360.

The previous prime is 3131312539. The next prime is 3131312549. The reversal of 3131312542 is 2452131313.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131312549) 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, 3804343 + ... + 3805165.

It is an arithmetic number, because the mean of its divisors is an integer number (153362880).

Almost surely, 2^3131312542 is an apocalyptic number.

3131312542 is a deficient number, since it is larger than the sum of its proper divisors (1776299618).

3131312542 is a wasteful number, since it uses less digits than its factorization.

3131312542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1528.

The product of its digits is 2160, while the sum is 25.

The square root of 3131312542 is about 55958.1320453069. The cubic root of 3131312542 is about 1462.9926328531.

Adding to 3131312542 its reverse (2452131313), we get a palindrome (5583443855).

The spelling of 3131312542 in words is "three billion, one hundred thirty-one million, three hundred twelve thousand, five hundred forty-two".