23310031231 has 16 divisors (see below), whose sum is σ = 24762101760. Its totient is φ = 21880938240.

The previous prime is 23310031201. The next prime is 23310031271. The reversal of 23310031231 is 13213001332.

It is a cyclic number.

It is not a de Polignac number, because 23310031231 - 2³³ = 14720096639 is a prime.

It is a super-2 number, since 2×23310031231² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23310031199 and 23310031208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23310031201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1989711 + ... + 2001391.

It is an arithmetic number, because the mean of its divisors is an integer number (1547631360).

Almost surely, 2^23310031231 is an apocalyptic number.

23310031231 is a deficient number, since it is larger than the sum of its proper divisors (1452070529).

23310031231 is a wasteful number, since it uses less digits than its factorization.

23310031231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12654.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 23310031231 its reverse (13213001332), we get a palindrome (36523032563).

The spelling of 23310031231 in words is "twenty-three billion, three hundred ten million, thirty-one thousand, two hundred thirty-one".