23117957 has 4 divisors (see below), whose sum is σ = 23154336. Its totient is φ = 23081580.

The previous prime is 23117953. The next prime is 23117981. The reversal of 23117957 is 75971132.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23117957 - 2² = 23117953 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23117953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17219 + ... + 18512.

It is an arithmetic number, because the mean of its divisors is an integer number (5788584).

Almost surely, 2^23117957 is an apocalyptic number.

It is an amenable number.

23117957 is a deficient number, since it is larger than the sum of its proper divisors (36379).

23117957 is an equidigital number, since it uses as much as digits as its factorization.

23117957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36378.

The product of its digits is 13230, while the sum is 35.

The square root of 23117957 is about 4808.1136633819. The cubic root of 23117957 is about 284.8720344776.

The spelling of 23117957 in words is "twenty-three million, one hundred seventeen thousand, nine hundred fifty-seven".