23516231 has 2 divisors, whose sum is σ = 23516232. Its totient is φ = 23516230.

The previous prime is 23516221. The next prime is 23516237. The reversal of 23516231 is 13261532.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23516231 - 2¹⁸ = 23254087 is a prime.

It is a super-2 number, since 2×23516231² = 1106026240890722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23516197 and 23516206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23516237) 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, 11758115 + 11758116.

It is an arithmetic number, because the mean of its divisors is an integer number (11758116).

Almost surely, 2^23516231 is an apocalyptic number.

23516231 is a deficient number, since it is larger than the sum of its proper divisors (1).

23516231 is an equidigital number, since it uses as much as digits as its factorization.

23516231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 23.

The square root of 23516231 is about 4849.3536682737. The cubic root of 23516231 is about 286.4986451534.

Adding to 23516231 its reverse (13261532), we get a palindrome (36777763).

The spelling of 23516231 in words is "twenty-three million, five hundred sixteen thousand, two hundred thirty-one".