23312111231 has 8 divisors (see below), whose sum is σ = 23589549984. Its totient is φ = 23035655520.

The previous prime is 23312111189. The next prime is 23312111233. The reversal of 23312111231 is 13211121332.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23312111231 is a prime.

It is a super-2 number, since 2×23312111231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23312111233) 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, 197996 + ... + 292961.

It is an arithmetic number, because the mean of its divisors is an integer number (2948693748).

Almost surely, 2^23312111231 is an apocalyptic number.

23312111231 is a deficient number, since it is larger than the sum of its proper divisors (277438753).

23312111231 is a wasteful number, since it uses less digits than its factorization.

23312111231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491521.

The product of its digits is 216, while the sum is 20.

Adding to 23312111231 its reverse (13211121332), we get a palindrome (36523232563).

The spelling of 23312111231 in words is "twenty-three billion, three hundred twelve million, one hundred eleven thousand, two hundred thirty-one".