23505305 has 32 divisors (see below), whose sum is σ = 31363200. Its totient is φ = 16837632.

The previous prime is 23505301. The next prime is 23505319. The reversal of 23505305 is 50350532.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 23505305 - 2² = 23505301 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23505301) 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 31 ways as a sum of consecutive naturals, for example, 215591 + ... + 215699.

It is an arithmetic number, because the mean of its divisors is an integer number (980100).

Almost surely, 2^23505305 is an apocalyptic number.

It is an amenable number.

23505305 is a deficient number, since it is larger than the sum of its proper divisors (7857895).

23505305 is a wasteful number, since it uses less digits than its factorization.

23505305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233.

The product of its (nonzero) digits is 2250, while the sum is 23.

The square root of 23505305 is about 4848.2269955108. The cubic root of 23505305 is about 286.4542677315.

Adding to 23505305 its reverse (50350532), we get a palindrome (73855837).

The spelling of 23505305 in words is "twenty-three million, five hundred five thousand, three hundred five".