23312855 has 4 divisors (see below), whose sum is σ = 27975432. Its totient is φ = 18650280.

The previous prime is 23312843. The next prime is 23312857. The reversal of 23312855 is 55821332.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 23312855 - 2¹² = 23308759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23312857) 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, 2331281 + ... + 2331290.

It is an arithmetic number, because the mean of its divisors is an integer number (6993858).

Almost surely, 2^23312855 is an apocalyptic number.

23312855 is a deficient number, since it is larger than the sum of its proper divisors (4662577).

23312855 is an equidigital number, since it uses as much as digits as its factorization.

23312855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4662576.

The product of its digits is 7200, while the sum is 29.

The square root of 23312855 is about 4828.3387412235. The cubic root of 23312855 is about 285.6703416344.

The spelling of 23312855 in words is "twenty-three million, three hundred twelve thousand, eight hundred fifty-five".