23813165 has 16 divisors (see below), whose sum is σ = 30388608. Its totient is φ = 17873856.

The previous prime is 23813149. The next prime is 23813173. The reversal of 23813165 is 56131832.

It is a cyclic number.

It is not a de Polignac number, because 23813165 - 2⁴ = 23813149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4142 + ... + 8048.

It is an arithmetic number, because the mean of its divisors is an integer number (1899288).

Almost surely, 2^23813165 is an apocalyptic number.

It is an amenable number.

23813165 is a deficient number, since it is larger than the sum of its proper divisors (6575443).

23813165 is a wasteful number, since it uses less digits than its factorization.

23813165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3988.

The product of its digits is 4320, while the sum is 29.

The square root of 23813165 is about 4879.8734614742. The cubic root of 23813165 is about 287.6994557966.

Adding to 23813165 its reverse (56131832), we get a palindrome (79944997).

The spelling of 23813165 in words is "twenty-three million, eight hundred thirteen thousand, one hundred sixty-five".