23243566 has 4 divisors (see below), whose sum is σ = 34865352. Its totient is φ = 11621782.

The previous prime is 23243543. The next prime is 23243599. The reversal of 23243566 is 66534232.

It is a happy number.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5810890 + ... + 5810893.

It is an arithmetic number, because the mean of its divisors is an integer number (8716338).

Almost surely, 2^23243566 is an apocalyptic number.

23243566 is a deficient number, since it is larger than the sum of its proper divisors (11621786).

23243566 is a wasteful number, since it uses less digits than its factorization.

23243566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11621785.

The product of its digits is 25920, while the sum is 31.

The square root of 23243566 is about 4821.1581596127. The cubic root of 23243566 is about 285.3870436468.

Adding to 23243566 its reverse (66534232), we get a palindrome (89777798).

The spelling of 23243566 in words is "twenty-three million, two hundred forty-three thousand, five hundred sixty-six".