23257913 has 8 divisors (see below), whose sum is σ = 27497280. Its totient is φ = 19247760.

The previous prime is 23257909. The next prime is 23257931. The reversal of 23257913 is 31975232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23257913 - 2² = 23257909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23257913.

It is not an unprimeable number, because it can be changed into a prime (23257933) 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 in 7 ways as a sum of consecutive naturals, for example, 57083 + ... + 57488.

It is an arithmetic number, because the mean of its divisors is an integer number (3437160).

Almost surely, 2^23257913 is an apocalyptic number.

It is an amenable number.

23257913 is a deficient number, since it is larger than the sum of its proper divisors (4239367).

23257913 is a wasteful number, since it uses less digits than its factorization.

23257913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114607.

The product of its digits is 11340, while the sum is 32.

The square root of 23257913 is about 4822.6458505679. The cubic root of 23257913 is about 285.4457495811.

The spelling of 23257913 in words is "twenty-three million, two hundred fifty-seven thousand, nine hundred thirteen".