23149923 has 32 divisors (see below), whose sum is σ = 33868800. Its totient is φ = 14017536.

The previous prime is 23149921. The next prime is 23149933. The reversal of 23149923 is 32994132.

It is not a de Polignac number, because 23149923 - 2¹ = 23149921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23149921) 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 in 31 ways as a sum of consecutive naturals, for example, 238611 + ... + 238707.

It is an arithmetic number, because the mean of its divisors is an integer number (1058400).

Almost surely, 2^23149923 is an apocalyptic number.

23149923 is a deficient number, since it is larger than the sum of its proper divisors (10718877).

23149923 is a wasteful number, since it uses less digits than its factorization.

23149923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251.

The product of its digits is 11664, while the sum is 33.

The square root of 23149923 is about 4811.4366877264. The cubic root of 23149923 is about 285.0032748162.

The spelling of 23149923 in words is "twenty-three million, one hundred forty-nine thousand, nine hundred twenty-three".