12591023 has 2 divisors, whose sum is σ = 12591024. Its totient is φ = 12591022.

The previous prime is 12590987. The next prime is 12591031. The reversal of 12591023 is 32019521.

It is a strong prime.

It is an emirp because it is prime and its reverse (32019521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12591023 - 2²² = 8396719 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12591023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12591043) 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, 6295511 + 6295512.

It is an arithmetic number, because the mean of its divisors is an integer number (6295512).

Almost surely, 2^12591023 is an apocalyptic number.

12591023 is a deficient number, since it is larger than the sum of its proper divisors (1).

12591023 is an equidigital number, since it uses as much as digits as its factorization.

12591023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 12591023 is about 3548.3831529304. The cubic root of 12591023 is about 232.6414016330.

The spelling of 12591023 in words is "twelve million, five hundred ninety-one thousand, twenty-three".