23305305 has 16 divisors (see below), whose sum is σ = 39251520. Its totient is φ = 11775168.

The previous prime is 23305277. The next prime is 23305307. The reversal of 23305305 is 50350332.

It is not a de Polignac number, because 23305305 - 2⁹ = 23304793 is a prime.

It is a super-2 number, since 2×23305305² = 1086274482286050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23305307) 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 15 ways as a sum of consecutive naturals, for example, 40602 + ... + 41171.

It is an arithmetic number, because the mean of its divisors is an integer number (2453220).

Almost surely, 2^23305305 is an apocalyptic number.

It is an amenable number.

23305305 is a deficient number, since it is larger than the sum of its proper divisors (15946215).

23305305 is a wasteful number, since it uses less digits than its factorization.

23305305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81800.

The product of its (nonzero) digits is 1350, while the sum is 21.

The square root of 23305305 is about 4827.5568355018. The cubic root of 23305305 is about 285.6394996526.

Adding to 23305305 its reverse (50350332), we get a palindrome (73655637).

The spelling of 23305305 in words is "twenty-three million, three hundred five thousand, three hundred five".