23157903 has 16 divisors (see below), whose sum is σ = 32814720. Its totient is φ = 14485536.

The previous prime is 23157853. The next prime is 23157943. The reversal of 23157903 is 30975132.

It is not a de Polignac number, because 23157903 - 2⁶ = 23157839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23157943) 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 15 ways as a sum of consecutive naturals, for example, 4201 + ... + 7997.

It is an arithmetic number, because the mean of its divisors is an integer number (2050920).

Almost surely, 2^23157903 is an apocalyptic number.

23157903 is a deficient number, since it is larger than the sum of its proper divisors (9656817).

23157903 is a wasteful number, since it uses less digits than its factorization.

23157903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3926.

The product of its (nonzero) digits is 5670, while the sum is 30.

The square root of 23157903 is about 4812.2658904096. The cubic root of 23157903 is about 285.0360188395.

The spelling of 23157903 in words is "twenty-three million, one hundred fifty-seven thousand, nine hundred three".