123231111331 has 8 divisors (see below), whose sum is σ = 124216593120. Its totient is φ = 122246875968.

The previous prime is 123231111319. The next prime is 123231111337. The reversal of 123231111331 is 133111132321.

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 123231111331 - 2⁵ = 123231111299 is a prime.

It is a super-2 number, since 2×123231111331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123231111337) 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, 112576 + ... + 509053.

It is an arithmetic number, because the mean of its divisors is an integer number (15527074140).

Almost surely, 2^123231111331 is an apocalyptic number.

123231111331 is a deficient number, since it is larger than the sum of its proper divisors (985481789).

123231111331 is a wasteful number, since it uses less digits than its factorization.

123231111331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623213.

The product of its digits is 324, while the sum is 22.

Adding to 123231111331 its reverse (133111132321), we get a palindrome (256342243652).

The spelling of 123231111331 in words is "one hundred twenty-three billion, two hundred thirty-one million, one hundred eleven thousand, three hundred thirty-one".