123331310031432 has 64 divisors (see below), whose sum is σ = 309233666016000. Its totient is φ = 40989774057984.

The previous prime is 123331310031431. The next prime is 123331310031469. The reversal of 123331310031432 is 234130013133321.

It is a happy number.

It is a super-2 number, since 2×123331310031432² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123331310031432.

It is not an unprimeable number, because it can be changed into a prime (123331310031431) 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, 33419169 + ... + 36925647.

It is an arithmetic number, because the mean of its divisors is an integer number (4831776031500).

Almost surely, 2^{123331310031432} is an apocalyptic number.

123331310031432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123331310031432 is an abundant number, since it is smaller than the sum of its proper divisors (185902355984568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123331310031432 is a wasteful number, since it uses less digits than its factorization.

123331310031432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3510790 (or 3510786 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 30.

Adding to 123331310031432 its reverse (234130013133321), we get a palindrome (357461323164753).

The spelling of 123331310031432 in words is "one hundred twenty-three trillion, three hundred thirty-one billion, three hundred ten million, thirty-one thousand, four hundred thirty-two".