23563403 has 6 divisors (see below), whose sum is σ = 24077676. Its totient is φ = 23059892.

The previous prime is 23563349. The next prime is 23563469. The reversal of 23563403 is 30436532.

It is not a de Polignac number, because 23563403 - 2⁸ = 23563147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23563483) 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 5 ways as a sum of consecutive naturals, for example, 3125 + ... + 7542.

It is an arithmetic number, because the mean of its divisors is an integer number (4012946).

Almost surely, 2^23563403 is an apocalyptic number.

23563403 is a deficient number, since it is larger than the sum of its proper divisors (514273).

23563403 is an equidigital number, since it uses as much as digits as its factorization.

23563403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10761 (or 10714 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 26.

The square root of 23563403 is about 4854.2149725780. The cubic root of 23563403 is about 286.6900829679.

Adding to 23563403 its reverse (30436532), we get a palindrome (53999935).

The spelling of 23563403 in words is "twenty-three million, five hundred sixty-three thousand, four hundred three".