123432104534531 has 32 divisors (see below), whose sum is σ = 150949155147840. Its totient is φ = 99674362404864.

The previous prime is 123432104534507. The next prime is 123432104534567. The reversal of 123432104534531 is 135435401234321.

It is not a de Polignac number, because 123432104534531 - 2³⁸ = 123157226627587 is a prime.

It is a super-2 number, since 2×123432104534531² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123432104534131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 277094390 + ... + 277539483.

It is an arithmetic number, because the mean of its divisors is an integer number (4717161098370).

Almost surely, 2^{123432104534531} is an apocalyptic number.

123432104534531 is a deficient number, since it is larger than the sum of its proper divisors (27517050613309).

123432104534531 is a wasteful number, since it uses less digits than its factorization.

123432104534531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554633975.

The product of its (nonzero) digits is 518400, while the sum is 41.

Adding to 123432104534531 its reverse (135435401234321), we get a palindrome (258867505768852).

The spelling of 123432104534531 in words is "one hundred twenty-three trillion, four hundred thirty-two billion, one hundred four million, five hundred thirty-four thousand, five hundred thirty-one".