23288917 has 2 divisors, whose sum is σ = 23288918. Its totient is φ = 23288916.

The previous prime is 23288911. The next prime is 23288921. The reversal of 23288917 is 71988232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13498276 + 9790641 = 3674^2 + 3129^2 .

It is a cyclic number.

It is not a de Polignac number, because 23288917 - 2⁷ = 23288789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23288917.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23288911) 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 as a sum of consecutive naturals, namely, 11644458 + 11644459.

It is an arithmetic number, because the mean of its divisors is an integer number (11644459).

Almost surely, 2^23288917 is an apocalyptic number.

It is an amenable number.

23288917 is a deficient number, since it is larger than the sum of its proper divisors (1).

23288917 is an equidigital number, since it uses as much as digits as its factorization.

23288917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 40.

The square root of 23288917 is about 4825.8591981118. The cubic root of 23288917 is about 285.5725312410.

The spelling of 23288917 in words is "twenty-three million, two hundred eighty-eight thousand, nine hundred seventeen".