23261291 has 2 divisors, whose sum is σ = 23261292. Its totient is φ = 23261290.

The previous prime is 23261269. The next prime is 23261297. The reversal of 23261291 is 19216232.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23261291 - 2²² = 19066987 is a prime.

It is equal to p_1463624 and since 23261291 and 1463624 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23261291.

It is not a weakly prime, because it can be changed into another prime (23261297) 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, 11630645 + 11630646.

It is an arithmetic number, because the mean of its divisors is an integer number (11630646).

Almost surely, 2^23261291 is an apocalyptic number.

23261291 is a deficient number, since it is larger than the sum of its proper divisors (1).

23261291 is an equidigital number, since it uses as much as digits as its factorization.

23261291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 26.

The square root of 23261291 is about 4822.9960605416. The cubic root of 23261291 is about 285.4595683771.

The spelling of 23261291 in words is "twenty-three million, two hundred sixty-one thousand, two hundred ninety-one".