23118791 has 4 divisors (see below), whose sum is σ = 23331000. Its totient is φ = 22906584.

The previous prime is 23118761. The next prime is 23118869. The reversal of 23118791 is 19781132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23118791 - 2⁶ = 23118727 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 (23118701) 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, 105941 + ... + 106158.

It is an arithmetic number, because the mean of its divisors is an integer number (5832750).

Almost surely, 2^23118791 is an apocalyptic number.

23118791 is a deficient number, since it is larger than the sum of its proper divisors (212209).

23118791 is a wasteful number, since it uses less digits than its factorization.

23118791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212208.

The product of its digits is 3024, while the sum is 32.

The square root of 23118791 is about 4808.2003909987. The cubic root of 23118791 is about 284.8754601035.

The spelling of 23118791 in words is "twenty-three million, one hundred eighteen thousand, seven hundred ninety-one".