23013111231 has 16 divisors (see below), whose sum is σ = 37192907520. Its totient is φ = 13947339960.

The previous prime is 23013111203. The next prime is 23013111257. The reversal of 23013111231 is 13211131032.

23013111231 is a `hidden beast` number, since 230 + 1 + 311 + 123 + 1 = 666.

It is not a de Polignac number, because 23013111231 - 2⁷ = 23013111103 is a prime.

It is a super-2 number, since 2×23013111231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23013111431) 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, 38742315 + ... + 38742908.

It is an arithmetic number, because the mean of its divisors is an integer number (2324556720).

Almost surely, 2^23013111231 is an apocalyptic number.

23013111231 is a deficient number, since it is larger than the sum of its proper divisors (14179796289).

23013111231 is a wasteful number, since it uses less digits than its factorization.

23013111231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77485243 (or 77485237 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 23013111231 its reverse (13211131032), we get a palindrome (36224242263).

The spelling of 23013111231 in words is "twenty-three billion, thirteen million, one hundred eleven thousand, two hundred thirty-one".