123103042122531 has 16 divisors (see below), whose sum is σ = 164701868400000. Its totient is φ = 81786897335808.

The previous prime is 123103042122523. The next prime is 123103042122553. The reversal of 123103042122531 is 135221240301321.

It is not a de Polignac number, because 123103042122531 - 2³ = 123103042122523 is a prime.

It is a super-2 number, since 2×123103042122531² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123103042127531) 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, 54140281 + ... + 56368218.

It is an arithmetic number, because the mean of its divisors is an integer number (10293866775000).

Almost surely, 2^{123103042122531} is an apocalyptic number.

123103042122531 is a deficient number, since it is larger than the sum of its proper divisors (41598826277469).

123103042122531 is a wasteful number, since it uses less digits than its factorization.

123103042122531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110509778.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 123103042122531 its reverse (135221240301321), we get a palindrome (258324282423852).

The spelling of 123103042122531 in words is "one hundred twenty-three trillion, one hundred three billion, forty-two million, one hundred twenty-two thousand, five hundred thirty-one".