123231223231 has 8 divisors (see below), whose sum is σ = 126702692928. Its totient is φ = 119781936000.

The previous prime is 123231223217. The next prime is 123231223261. The reversal of 123231223231 is 132322132321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123231223231 - 2³³ = 114641288639 is a prime.

It is a super-2 number, since 2×123231223231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123231223196 and 123231223205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123231223261) 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 7 ways as a sum of consecutive naturals, for example, 5534350 + ... + 5556571.

It is an arithmetic number, because the mean of its divisors is an integer number (15837836616).

Almost surely, 2^123231223231 is an apocalyptic number.

123231223231 is a deficient number, since it is larger than the sum of its proper divisors (3471469697).

123231223231 is a wasteful number, since it uses less digits than its factorization.

123231223231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11091233.

The product of its digits is 2592, while the sum is 25.

Adding to 123231223231 its reverse (132322132321), we get a palindrome (255553355552).

The spelling of 123231223231 in words is "one hundred twenty-three billion, two hundred thirty-one million, two hundred twenty-three thousand, two hundred thirty-one".