23913205 has 4 divisors (see below), whose sum is σ = 28695852. Its totient is φ = 19130560.

The previous prime is 23913187. The next prime is 23913223. The reversal of 23913205 is 50231932.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (23913187) and next prime (23913223).

It can be written as a sum of positive squares in 2 ways, for example, as 14122564 + 9790641 = 3758^2 + 3129^2 .

It is not a de Polignac number, because 23913205 - 2¹⁹ = 23388917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23913205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2391316 + ... + 2391325.

It is an arithmetic number, because the mean of its divisors is an integer number (7173963).

Almost surely, 2^23913205 is an apocalyptic number.

It is an amenable number.

23913205 is a deficient number, since it is larger than the sum of its proper divisors (4782647).

23913205 is an equidigital number, since it uses as much as digits as its factorization.

23913205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4782646.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 23913205 is about 4890.1129843798. The cubic root of 23913205 is about 288.1017716776.

The spelling of 23913205 in words is "twenty-three million, nine hundred thirteen thousand, two hundred five".