23318657 has 2 divisors, whose sum is σ = 23318658. Its totient is φ = 23318656.

The previous prime is 23318651. The next prime is 23318677. The reversal of 23318657 is 75681332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17048641 + 6270016 = 4129^2 + 2504^2 .

It is a cyclic number.

It is not a de Polignac number, because 23318657 - 2⁴ = 23318641 is a prime.

It is not a weakly prime, because it can be changed into another prime (23318651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11659328 + 11659329.

It is an arithmetic number, because the mean of its divisors is an integer number (11659329).

Almost surely, 2^23318657 is an apocalyptic number.

It is an amenable number.

23318657 is a deficient number, since it is larger than the sum of its proper divisors (1).

23318657 is an equidigital number, since it uses as much as digits as its factorization.

23318657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 35.

The square root of 23318657 is about 4828.9395316156. The cubic root of 23318657 is about 285.6940384581.

Adding to 23318657 its reverse (75681332), we get a palindrome (98999989).

The spelling of 23318657 in words is "twenty-three million, three hundred eighteen thousand, six hundred fifty-seven".