23312805 has 16 divisors (see below), whose sum is σ = 38211264. Its totient is φ = 12129920.

The previous prime is 23312803. The next prime is 23312819. The reversal of 23312805 is 50821332.

It is not a de Polignac number, because 23312805 - 2¹ = 23312803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23312803) 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, 18339 + ... + 19568.

It is an arithmetic number, because the mean of its divisors is an integer number (2388204).

Almost surely, 2^23312805 is an apocalyptic number.

It is an amenable number.

23312805 is a deficient number, since it is larger than the sum of its proper divisors (14898459).

23312805 is a wasteful number, since it uses less digits than its factorization.

23312805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37956.

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

The square root of 23312805 is about 4828.3335634564. Note that the first 3 decimals coincide. The cubic root of 23312805 is about 285.6701374048.

The spelling of 23312805 in words is "twenty-three million, three hundred twelve thousand, eight hundred five".