23118357 has 4 divisors (see below), whose sum is σ = 30824480. Its totient is φ = 15412236.

The previous prime is 23118299. The next prime is 23118371. The reversal of 23118357 is 75381132.

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 not a de Polignac number, because 23118357 - 2⁸ = 23118101 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 (23118397) 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, 3853057 + ... + 3853062.

It is an arithmetic number, because the mean of its divisors is an integer number (7706120).

Almost surely, 2^23118357 is an apocalyptic number.

It is an amenable number.

23118357 is a deficient number, since it is larger than the sum of its proper divisors (7706123).

23118357 is an equidigital number, since it uses as much as digits as its factorization.

23118357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7706122.

The product of its digits is 5040, while the sum is 30.

The square root of 23118357 is about 4808.1552595564. The cubic root of 23118357 is about 284.8736774739.

Adding to 23118357 its reverse (75381132), we get a palindrome (98499489).

The spelling of 23118357 in words is "twenty-three million, one hundred eighteen thousand, three hundred fifty-seven".