23312218 has 4 divisors (see below), whose sum is σ = 34968330. Its totient is φ = 11656108.

The previous prime is 23312147. The next prime is 23312227. The reversal of 23312218 is 81221332.

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

It can be written as a sum of positive squares in only one way, i.e., 15342889 + 7969329 = 3917^2 + 2823^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5828053 + ... + 5828056.

Almost surely, 2^23312218 is an apocalyptic number.

23312218 is a deficient number, since it is larger than the sum of its proper divisors (11656112).

23312218 is a wasteful number, since it uses less digits than its factorization.

23312218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11656111.

The product of its digits is 576, while the sum is 22.

The square root of 23312218 is about 4828.2727760556. The cubic root of 23312218 is about 285.6677397271.

The spelling of 23312218 in words is "twenty-three million, three hundred twelve thousand, two hundred eighteen".