23213805 has 24 divisors (see below), whose sum is σ = 37795296. Its totient is φ = 12166560.

The previous prime is 23213797. The next prime is 23213807. The reversal of 23213805 is 50831232.

It is not a de Polignac number, because 23213805 - 2³ = 23213797 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23213807) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75462 + ... + 75768.

It is an arithmetic number, because the mean of its divisors is an integer number (1574804).

Almost surely, 2^23213805 is an apocalyptic number.

It is an amenable number.

23213805 is a deficient number, since it is larger than the sum of its proper divisors (14581491).

23213805 is an equidigital number, since it uses as much as digits as its factorization.

23213805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457 (or 386 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 23213805 is about 4818.0706719599. The cubic root of 23213805 is about 285.2651886876.

The spelling of 23213805 in words is "twenty-three million, two hundred thirteen thousand, eight hundred five".