123231031310032 has 40 divisors (see below), whose sum is σ = 238992311905920. Its totient is φ = 61555624475520.

The previous prime is 123231031310017. The next prime is 123231031310083. The reversal of 123231031310032 is 230013130132321.

It is a junction number, because it is equal to n+sod(n) for n = 123231031309979 and 123231031310006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68467557 + ... + 70244347.

It is an arithmetic number, because the mean of its divisors is an integer number (5974807797648).

Almost surely, 2^{123231031310032} is an apocalyptic number.

It is an amenable number.

123231031310032 is a deficient number, since it is larger than the sum of its proper divisors (115761280595888).

123231031310032 is a wasteful number, since it uses less digits than its factorization.

123231031310032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1781011 (or 1781005 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 123231031310032 its reverse (230013130132321), we get a palindrome (353244161442353).

The spelling of 123231031310032 in words is "one hundred twenty-three trillion, two hundred thirty-one billion, thirty-one million, three hundred ten thousand, thirty-two".