123031012211031 has 32 divisors (see below), whose sum is σ = 171904239360000. Its totient is φ = 78186864254720.

The previous prime is 123031012211017. The next prime is 123031012211087. The reversal of 123031012211031 is 130112210130321.

It is a cyclic number.

It is not a de Polignac number, because 123031012211031 - 2²³ = 123031003822423 is a prime.

It is a super-2 number, since 2×123031012211031² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123031012210989 and 123031012211007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123031012211831) 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, 14301756 + ... + 21227393.

It is an arithmetic number, because the mean of its divisors is an integer number (5372007480000).

Almost surely, 2^{123031012211031} is an apocalyptic number.

123031012211031 is a deficient number, since it is larger than the sum of its proper divisors (48873227148969).

123031012211031 is a wasteful number, since it uses less digits than its factorization.

123031012211031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35529839.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 123031012211031 its reverse (130112210130321), we get a palindrome (253143222341352).

The spelling of 123031012211031 in words is "one hundred twenty-three trillion, thirty-one billion, twelve million, two hundred eleven thousand, thirty-one".