23918903 has 2 divisors, whose sum is σ = 23918904. Its totient is φ = 23918902.

The previous prime is 23918863. The next prime is 23918959. The reversal of 23918903 is 30981932.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23918903 - 2²⁰ = 22870327 is a prime.

It is a super-2 number, since 2×23918903² = 1144227841446818, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23918003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11959451 + 11959452.

It is an arithmetic number, because the mean of its divisors is an integer number (11959452).

Almost surely, 2^23918903 is an apocalyptic number.

23918903 is a deficient number, since it is larger than the sum of its proper divisors (1).

23918903 is an equidigital number, since it uses as much as digits as its factorization.

23918903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 23918903 is about 4890.6955538042. The cubic root of 23918903 is about 288.1246526692.

The spelling of 23918903 in words is "twenty-three million, nine hundred eighteen thousand, nine hundred three".