123131031133112 has 32 divisors (see below), whose sum is σ = 241037161598880. Its totient is φ = 58857312983040.

The previous prime is 123131031133073. The next prime is 123131031133127. The reversal of 123131031133112 is 211331130131321.

It is a super-2 number, since 2×123131031133112² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178296689 + ... + 178985952.

It is an arithmetic number, because the mean of its divisors is an integer number (7532411299965).

Almost surely, 2^{123131031133112} is an apocalyptic number.

It is an amenable number.

123131031133112 is a deficient number, since it is larger than the sum of its proper divisors (117906130465768).

123131031133112 is a wasteful number, since it uses less digits than its factorization.

123131031133112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357284543 (or 357284539 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 26.

Adding to 123131031133112 its reverse (211331130131321), we get a palindrome (334462161264433).

The spelling of 123131031133112 in words is "one hundred twenty-three trillion, one hundred thirty-one billion, thirty-one million, one hundred thirty-three thousand, one hundred twelve".