123210331231 has 16 divisors (see below), whose sum is σ = 140510299104. Its totient is φ = 107029453824.

The previous prime is 123210331159. The next prime is 123210331247. The reversal of 123210331231 is 132133012321.

It is a cyclic number.

It is not a de Polignac number, because 123210331231 - 2²⁹ = 122673460319 is a prime.

It is a super-2 number, since 2×123210331231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123210301231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2089651 + ... + 2147803.

It is an arithmetic number, because the mean of its divisors is an integer number (8781893694).

Almost surely, 2^123210331231 is an apocalyptic number.

123210331231 is a deficient number, since it is larger than the sum of its proper divisors (17299967873).

123210331231 is a wasteful number, since it uses less digits than its factorization.

123210331231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67770.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 123210331231 its reverse (132133012321), we get a palindrome (255343343552).

The spelling of 123210331231 in words is "one hundred twenty-three billion, two hundred ten million, three hundred thirty-one thousand, two hundred thirty-one".