23381899 has 2 divisors, whose sum is σ = 23381900. Its totient is φ = 23381898.

The previous prime is 23381893. The next prime is 23381923. The reversal of 23381899 is 99818332.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23381899 - 2⁹ = 23381387 is a prime.

It is not a weakly prime, because it can be changed into another prime (23381893) 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, 11690949 + 11690950.

It is an arithmetic number, because the mean of its divisors is an integer number (11690950).

Almost surely, 2^23381899 is an apocalyptic number.

23381899 is a deficient number, since it is larger than the sum of its proper divisors (1).

23381899 is an equidigital number, since it uses as much as digits as its factorization.

23381899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 43.

The square root of 23381899 is about 4835.4833264111. The cubic root of 23381899 is about 285.9520800930.

The spelling of 23381899 in words is "twenty-three million, three hundred eighty-one thousand, eight hundred ninety-nine".