123231131223 has 32 divisors (see below), whose sum is σ = 170365747200. Its totient is φ = 79177434336.

The previous prime is 123231131213. The next prime is 123231131251. The reversal of 123231131223 is 322131132321.

It is not a de Polignac number, because 123231131223 - 2¹⁶ = 123231065687 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123231131193 and 123231131202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123231131203) 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, 22488798 + ... + 22494276.

It is an arithmetic number, because the mean of its divisors is an integer number (5323929600).

Almost surely, 2^123231131223 is an apocalyptic number.

123231131223 is a deficient number, since it is larger than the sum of its proper divisors (47134615977).

123231131223 is a wasteful number, since it uses less digits than its factorization.

123231131223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7811.

The product of its digits is 1296, while the sum is 24.

Adding to 123231131223 its reverse (322131132321), we get a palindrome (445362263544).

The spelling of 123231131223 in words is "one hundred twenty-three billion, two hundred thirty-one million, one hundred thirty-one thousand, two hundred twenty-three".