31013131323122 has 64 divisors (see below), whose sum is σ = 53346723897600. Its totient is φ = 13403176427520.

The previous prime is 31013131323121. The next prime is 31013131323143. The reversal of 31013131323122 is 22132313131013.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 31013131323091 and 31013131323100.

It is not an unprimeable number, because it can be changed into a prime (31013131323121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122582738 + ... + 122835474.

It is an arithmetic number, because the mean of its divisors is an integer number (833542560900).

Almost surely, 2^{31013131323122} is an apocalyptic number.

31013131323122 is a deficient number, since it is larger than the sum of its proper divisors (22333592574478).

31013131323122 is a wasteful number, since it uses less digits than its factorization.

31013131323122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255651.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 31013131323122 its reverse (22132313131013), we get a palindrome (53145444454135).

The spelling of 31013131323122 in words is "thirty-one trillion, thirteen billion, one hundred thirty-one million, three hundred twenty-three thousand, one hundred twenty-two".