23842591 has 2 divisors, whose sum is σ = 23842592. Its totient is φ = 23842590.

The previous prime is 23842579. The next prime is 23842601. The reversal of 23842591 is 19524832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23842591 - 2⁷ = 23842463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23842501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11921295 + 11921296.

It is an arithmetic number, because the mean of its divisors is an integer number (11921296).

Almost surely, 2^23842591 is an apocalyptic number.

23842591 is a deficient number, since it is larger than the sum of its proper divisors (1).

23842591 is an equidigital number, since it uses as much as digits as its factorization.

23842591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 34.

The square root of 23842591 is about 4882.8875678230. The cubic root of 23842591 is about 287.8179107141.

The spelling of 23842591 in words is "twenty-three million, eight hundred forty-two thousand, five hundred ninety-one".