23913791 has 4 divisors (see below), whose sum is σ = 26087784. Its totient is φ = 21739800.

The previous prime is 23913779. The next prime is 23913797. The reversal of 23913791 is 19731932.

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 23913791 - 2⁶ = 23913727 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23913797) 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, 1086980 + ... + 1087001.

It is an arithmetic number, because the mean of its divisors is an integer number (6521946).

Almost surely, 2^23913791 is an apocalyptic number.

23913791 is a deficient number, since it is larger than the sum of its proper divisors (2173993).

23913791 is a wasteful number, since it uses less digits than its factorization.

23913791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2173992.

The product of its digits is 10206, while the sum is 35.

The square root of 23913791 is about 4890.1729008288. The cubic root of 23913791 is about 288.1041249975.

The spelling of 23913791 in words is "twenty-three million, nine hundred thirteen thousand, seven hundred ninety-one".