123013240420031 has 16 divisors (see below), whose sum is σ = 135034360965504. Its totient is φ = 111359502618624.

The previous prime is 123013240420009. The next prime is 123013240420043. The reversal of 123013240420031 is 130024042310321.

It is not a de Polignac number, because 123013240420031 - 2¹⁸ = 123013240157887 is a prime.

It is a super-2 number, since 2×123013240420031² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123013240420001) 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, 37457666 + ... + 40609151.

It is an arithmetic number, because the mean of its divisors is an integer number (8439647560344).

Almost surely, 2^{123013240420031} is an apocalyptic number.

123013240420031 is a deficient number, since it is larger than the sum of its proper divisors (12021120545473).

123013240420031 is a wasteful number, since it uses less digits than its factorization.

123013240420031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78069170.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 123013240420031 its reverse (130024042310321), we get a palindrome (253037282730352).

The spelling of 123013240420031 in words is "one hundred twenty-three trillion, thirteen billion, two hundred forty million, four hundred twenty thousand, thirty-one".