123541311331023 has 32 divisors (see below), whose sum is σ = 166198144204800. Its totient is φ = 81625870943616.

The previous prime is 123541311330859. The next prime is 123541311331093. The reversal of 123541311331023 is 320133113145321.

It is not a de Polignac number, because 123541311331023 - 2²⁰ = 123541310282447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123541311331093) 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, 871331365 + ... + 871473137.

It is an arithmetic number, because the mean of its divisors is an integer number (5193692006400).

Almost surely, 2^{123541311331023} is an apocalyptic number.

123541311331023 is a deficient number, since it is larger than the sum of its proper divisors (42656832873777).

123541311331023 is a wasteful number, since it uses less digits than its factorization.

123541311331023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147391.

The product of its (nonzero) digits is 19440, while the sum is 33.

Adding to 123541311331023 its reverse (320133113145321), we get a palindrome (443674424476344).

The spelling of 123541311331023 in words is "one hundred twenty-three trillion, five hundred forty-one billion, three hundred eleven million, three hundred thirty-one thousand, twenty-three".