123331223231 has 8 divisors (see below), whose sum is σ = 128727222624. Its totient is φ = 117938038240.

The previous prime is 123331223219. The next prime is 123331223233. The reversal of 123331223231 is 132322133321.

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 123331223231 - 2⁶ = 123331223167 is a prime.

It is a super-2 number, since 2×123331223231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123331223231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123331223233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 613796 + ... + 789561.

It is an arithmetic number, because the mean of its divisors is an integer number (16090902828).

Almost surely, 2^123331223231 is an apocalyptic number.

123331223231 is a deficient number, since it is larger than the sum of its proper divisors (5395999393).

123331223231 is a wasteful number, since it uses less digits than its factorization.

123331223231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407201.

The product of its digits is 3888, while the sum is 26.

Adding to 123331223231 its reverse (132322133321), we get a palindrome (255653356552).

The spelling of 123331223231 in words is "one hundred twenty-three billion, three hundred thirty-one million, two hundred twenty-three thousand, two hundred thirty-one".