23172099 has 4 divisors (see below), whose sum is σ = 30896136. Its totient is φ = 15448064.

The previous prime is 23172089. The next prime is 23172113. The reversal of 23172099 is 99027132.

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

It is a cyclic number.

It is not a de Polignac number, because 23172099 - 2⁵ = 23172067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23172049) 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, 3862014 + ... + 3862019.

It is an arithmetic number, because the mean of its divisors is an integer number (7724034).

Almost surely, 2^23172099 is an apocalyptic number.

23172099 is a deficient number, since it is larger than the sum of its proper divisors (7724037).

23172099 is an equidigital number, since it uses as much as digits as its factorization.

23172099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7724036.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 23172099 is about 4813.7406452778. The cubic root of 23172099 is about 285.0942501452.

The spelling of 23172099 in words is "twenty-three million, one hundred seventy-two thousand, ninety-nine".