23123231 has 2 divisors, whose sum is σ = 23123232. Its totient is φ = 23123230.

The previous prime is 23123189. The next prime is 23123239. The reversal of 23123231 is 13232132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23123231 - 2⁶ = 23123167 is a prime.

It is a super-2 number, since 2×23123231² = 1069367623758722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23123239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11561615 + 11561616.

It is an arithmetic number, because the mean of its divisors is an integer number (11561616).

Almost surely, 2^23123231 is an apocalyptic number.

23123231 is a deficient number, since it is larger than the sum of its proper divisors (1).

23123231 is an equidigital number, since it uses as much as digits as its factorization.

23123231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 17.

The square root of 23123231 is about 4808.6620800385. The cubic root of 23123231 is about 284.8936958622.

Adding to 23123231 its reverse (13232132), we get a palindrome (36355363).

The spelling of 23123231 in words is "twenty-three million, one hundred twenty-three thousand, two hundred thirty-one".