23508913 has 2 divisors, whose sum is σ = 23508914. Its totient is φ = 23508912.

The previous prime is 23508907. The next prime is 23508929. The reversal of 23508913 is 31980532.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21455424 + 2053489 = 4632^2 + 1433^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23508913 is a prime.

It is not a weakly prime, because it can be changed into another prime (23508113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11754456 + 11754457.

It is an arithmetic number, because the mean of its divisors is an integer number (11754457).

Almost surely, 2^23508913 is an apocalyptic number.

It is an amenable number.

23508913 is a deficient number, since it is larger than the sum of its proper divisors (1).

23508913 is an equidigital number, since it uses as much as digits as its factorization.

23508913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 23508913 is about 4848.5990760219. The cubic root of 23508913 is about 286.4689236304.

The spelling of 23508913 in words is "twenty-three million, five hundred eight thousand, nine hundred thirteen".