123203450054531 has 32 divisors (see below), whose sum is σ = 155333254694400. Its totient is φ = 94922135066880.

The previous prime is 123203450054429. The next prime is 123203450054551. The reversal of 123203450054531 is 135450054302321.

It is not a de Polignac number, because 123203450054531 - 2³⁴ = 123186270185347 is a prime.

It is a super-2 number, since 2×123203450054531² (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 (123203450054551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 420209621 + ... + 420502713.

It is an arithmetic number, because the mean of its divisors is an integer number (4854164209200).

Almost surely, 2^{123203450054531} is an apocalyptic number.

123203450054531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123203450054531 is a deficient number, since it is larger than the sum of its proper divisors (32129804639869).

123203450054531 is a wasteful number, since it uses less digits than its factorization.

123203450054531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354539.

The product of its (nonzero) digits is 216000, while the sum is 38.

The spelling of 123203450054531 in words is "one hundred twenty-three trillion, two hundred three billion, four hundred fifty million, fifty-four thousand, five hundred thirty-one".