23003165 has 4 divisors (see below), whose sum is σ = 27603804. Its totient is φ = 18402528.

The previous prime is 23003153. The next prime is 23003171. The reversal of 23003165 is 56130032.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9504889 + 13498276 = 3083^2 + 3674^2 .

It is a cyclic number.

It is not a de Polignac number, because 23003165 - 2²⁰ = 21954589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2300312 + ... + 2300321.

It is an arithmetic number, because the mean of its divisors is an integer number (6900951).

Almost surely, 2^23003165 is an apocalyptic number.

It is an amenable number.

23003165 is a deficient number, since it is larger than the sum of its proper divisors (4600639).

23003165 is an equidigital number, since it uses as much as digits as its factorization.

23003165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4600638.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 23003165 is about 4796.1614860219. The cubic root of 23003165 is about 284.3997420810.

Adding to 23003165 its reverse (56130032), we get a palindrome (79133197).

The spelling of 23003165 in words is "twenty-three million, three thousand, one hundred sixty-five".