23263921 has 4 divisors (see below), whose sum is σ = 23331312. Its totient is φ = 23196532.

The previous prime is 23263913. The next prime is 23263943. The reversal of 23263921 is 12936232.

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 a cyclic number.

It is not a de Polignac number, because 23263921 - 2³ = 23263913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23263921.

It is not an unprimeable number, because it can be changed into a prime (23263901) 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, 33175 + ... + 33868.

It is an arithmetic number, because the mean of its divisors is an integer number (5832828).

Almost surely, 2^23263921 is an apocalyptic number.

It is an amenable number.

23263921 is a deficient number, since it is larger than the sum of its proper divisors (67391).

23263921 is an equidigital number, since it uses as much as digits as its factorization.

23263921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67390.

The product of its digits is 3888, while the sum is 28.

The square root of 23263921 is about 4823.2687049344. The cubic root of 23263921 is about 285.4703263121.

The spelling of 23263921 in words is "twenty-three million, two hundred sixty-three thousand, nine hundred twenty-one".