12313591 has 2 divisors, whose sum is σ = 12313592. Its totient is φ = 12313590.

The previous prime is 12313573. The next prime is 12313619. The reversal of 12313591 is 19531321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12313591 - 2¹¹ = 12311543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12310591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6156795 + 6156796.

It is an arithmetic number, because the mean of its divisors is an integer number (6156796).

Almost surely, 2^12313591 is an apocalyptic number.

12313591 is a deficient number, since it is larger than the sum of its proper divisors (1).

12313591 is an equidigital number, since it uses as much as digits as its factorization.

12313591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 810, while the sum is 25.

The square root of 12313591 is about 3509.0726695240. The cubic root of 12313591 is about 230.9200137856.

The spelling of 12313591 in words is "twelve million, three hundred thirteen thousand, five hundred ninety-one".