23021011231 has 2 divisors, whose sum is σ = 23021011232. Its totient is φ = 23021011230.

The previous prime is 23021011201. The next prime is 23021011253. The reversal of 23021011231 is 13211012032.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23021011231 is a prime.

It is a super-2 number, since 2×23021011231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23021011201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11510505615 + 11510505616.

It is an arithmetic number, because the mean of its divisors is an integer number (11510505616).

Almost surely, 2^23021011231 is an apocalyptic number.

23021011231 is a deficient number, since it is larger than the sum of its proper divisors (1).

23021011231 is an equidigital number, since it uses as much as digits as its factorization.

23021011231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 23021011231 its reverse (13211012032), we get a palindrome (36232023263).

The spelling of 23021011231 in words is "twenty-three billion, twenty-one million, eleven thousand, two hundred thirty-one".