23312489 has 2 divisors, whose sum is σ = 23312490. Its totient is φ = 23312488.

The previous prime is 23312483. The next prime is 23312519. The reversal of 23312489 is 98421332.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23232400 + 80089 = 4820^2 + 283^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23312489 is a prime.

It is not a weakly prime, because it can be changed into another prime (23312483) 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, 11656244 + 11656245.

It is an arithmetic number, because the mean of its divisors is an integer number (11656245).

Almost surely, 2^23312489 is an apocalyptic number.

It is an amenable number.

23312489 is a deficient number, since it is larger than the sum of its proper divisors (1).

23312489 is an equidigital number, since it uses as much as digits as its factorization.

23312489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 32.

The square root of 23312489 is about 4828.3008398400. The cubic root of 23312489 is about 285.6688466668.

The spelling of 23312489 in words is "twenty-three million, three hundred twelve thousand, four hundred eighty-nine".