123243433131123 has 64 divisors (see below), whose sum is σ = 188713421271040. Its totient is φ = 79410354912000.

The previous prime is 123243433131113. The next prime is 123243433131127. The reversal of 123243433131123 is 321131334342321.

123243433131123 is a `hidden beast` number, since 1 + 2 + 3 + 2 + 4 + 3 + 4 + 331 + 311 + 2 + 3 = 666.

It is not a de Polignac number, because 123243433131123 - 2⁴ = 123243433131107 is a prime.

It is a super-2 number, since 2×123243433131123² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123243433131127) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3380496711 + ... + 3380533167.

It is an arithmetic number, because the mean of its divisors is an integer number (2948647207360).

Almost surely, 2^{123243433131123} is an apocalyptic number.

123243433131123 is a deficient number, since it is larger than the sum of its proper divisors (65469988139917).

123243433131123 is a wasteful number, since it uses less digits than its factorization.

123243433131123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41545 (or 41539 counting only the distinct ones).

The product of its digits is 93312, while the sum is 36.

Adding to 123243433131123 its reverse (321131334342321), we get a palindrome (444374767473444).

The spelling of 123243433131123 in words is "one hundred twenty-three trillion, two hundred forty-three billion, four hundred thirty-three million, one hundred thirty-one thousand, one hundred twenty-three".