23447903 has 2 divisors, whose sum is σ = 23447904. Its totient is φ = 23447902.

The previous prime is 23447891. The next prime is 23447917. The reversal of 23447903 is 30974432.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23447903 - 2⁴ = 23447887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23447903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23447933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11723951 + 11723952.

It is an arithmetic number, because the mean of its divisors is an integer number (11723952).

Almost surely, 2^23447903 is an apocalyptic number.

23447903 is a deficient number, since it is larger than the sum of its proper divisors (1).

23447903 is an equidigital number, since it uses as much as digits as its factorization.

23447903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 23447903 is about 4842.3034807827. The cubic root of 23447903 is about 286.2208955745.

The spelling of 23447903 in words is "twenty-three million, four hundred forty-seven thousand, nine hundred three".