123004124555431 has 4 divisors (see below), whose sum is σ = 140576142349072. Its totient is φ = 105432106761792.

The previous prime is 123004124555413. The next prime is 123004124555447. The reversal of 123004124555431 is 134555421400321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123004124555431 - 2⁷ = 123004124555303 is a prime.

It is a super-2 number, since 2×123004124555431² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123004124559431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8786008896810 + ... + 8786008896823.

It is an arithmetic number, because the mean of its divisors is an integer number (35144035587268).

Almost surely, 2^{123004124555431} is an apocalyptic number.

123004124555431 is a deficient number, since it is larger than the sum of its proper divisors (17572017793641).

123004124555431 is an equidigital number, since it uses as much as digits as its factorization.

123004124555431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17572017793640.

The product of its (nonzero) digits is 288000, while the sum is 40.

Adding to 123004124555431 its reverse (134555421400321), we get a palindrome (257559545955752).

The spelling of 123004124555431 in words is "one hundred twenty-three trillion, four billion, one hundred twenty-four million, five hundred fifty-five thousand, four hundred thirty-one".