23256613 has 2 divisors, whose sum is σ = 23256614. Its totient is φ = 23256612.

The previous prime is 23256601. The next prime is 23256619. The reversal of 23256613 is 31665232.

23256613 is nontrivially palindromic in base 4.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19695844 + 3560769 = 4438^2 + 1887^2 .

It is a cyclic number.

It is not a de Polignac number, because 23256613 - 2²¹ = 21159461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23256619) 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, 11628306 + 11628307.

It is an arithmetic number, because the mean of its divisors is an integer number (11628307).

Almost surely, 2^23256613 is an apocalyptic number.

It is an amenable number.

23256613 is a deficient number, since it is larger than the sum of its proper divisors (1).

23256613 is an equidigital number, since it uses as much as digits as its factorization.

23256613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 28.

The square root of 23256613 is about 4822.5110678981. The cubic root of 23256613 is about 285.4404311563.

The spelling of 23256613 in words is "twenty-three million, two hundred fifty-six thousand, six hundred thirteen".