23281166 has 4 divisors (see below), whose sum is σ = 34921752. Its totient is φ = 11640582.

The previous prime is 23281163. The next prime is 23281169. The reversal of 23281166 is 66118232.

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

It is an interprime number because it is at equal distance from previous prime (23281163) and next prime (23281169).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23281163) by changing a digit.

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, 5820290 + ... + 5820293.

It is an arithmetic number, because the mean of its divisors is an integer number (8730438).

Almost surely, 2^23281166 is an apocalyptic number.

23281166 is a deficient number, since it is larger than the sum of its proper divisors (11640586).

23281166 is a wasteful number, since it uses less digits than its factorization.

23281166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11640585.

The product of its digits is 3456, while the sum is 29.

The square root of 23281166 is about 4825.0560618505. The cubic root of 23281166 is about 285.5408463800.

Adding to 23281166 its reverse (66118232), we get a palindrome (89399398).

The spelling of 23281166 in words is "twenty-three million, two hundred eighty-one thousand, one hundred sixty-six".