23919903 has 12 divisors (see below), whose sum is σ = 39486928. Its totient is φ = 13668480.

The previous prime is 23919899. The next prime is 23919913. The reversal of 23919903 is 30991932.

It is not a de Polignac number, because 23919903 - 2² = 23919899 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23919913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 189778 + ... + 189903.

Almost surely, 2^23919903 is an apocalyptic number.

23919903 is a deficient number, since it is larger than the sum of its proper divisors (15567025).

23919903 is a wasteful number, since it uses less digits than its factorization.

23919903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379694 (or 379691 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 36.

The square root of 23919903 is about 4890.7977876825. The cubic root of 23919903 is about 288.1286679124.

The spelling of 23919903 in words is "twenty-three million, nine hundred nineteen thousand, nine hundred three".