23813691 has 16 divisors (see below), whose sum is σ = 34826880. Its totient is φ = 14353920.

The previous prime is 23813687. The next prime is 23813693. The reversal of 23813691 is 19631832.

It is not a de Polignac number, because 23813691 - 2² = 23813687 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (23813693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4500 + ... + 8238.

It is an arithmetic number, because the mean of its divisors is an integer number (2176680).

Almost surely, 2^23813691 is an apocalyptic number.

23813691 is a deficient number, since it is larger than the sum of its proper divisors (11013189).

23813691 is a wasteful number, since it uses less digits than its factorization.

23813691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3946.

The product of its digits is 7776, while the sum is 33.

The square root of 23813691 is about 4879.9273560167. The cubic root of 23813691 is about 287.7015740758.

The spelling of 23813691 in words is "twenty-three million, eight hundred thirteen thousand, six hundred ninety-one".