23903105 has 16 divisors (see below), whose sum is σ = 31421520. Its totient is φ = 17375232.

The previous prime is 23903101. The next prime is 23903129. The reversal of 23903105 is 50130932.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 361201 + 23541904 = 601^2 + 4852^2 .

It is a cyclic number.

It is not a de Polignac number, because 23903105 - 2² = 23903101 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23903101) 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, 2384 + ... + 7313.

It is an arithmetic number, because the mean of its divisors is an integer number (1963845).

Almost surely, 2^23903105 is an apocalyptic number.

It is an amenable number.

23903105 is a deficient number, since it is larger than the sum of its proper divisors (7518415).

23903105 is a wasteful number, since it uses less digits than its factorization.

23903105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9748.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 23903105 is about 4889.0801793384. The cubic root of 23903105 is about 288.0612050025.

The spelling of 23903105 in words is "twenty-three million, nine hundred three thousand, one hundred five".