12307391 has 2 divisors, whose sum is σ = 12307392. Its totient is φ = 12307390.

The previous prime is 12307381. The next prime is 12307409. The reversal of 12307391 is 19370321.

It is a weak prime.

It is an emirp because it is prime and its reverse (19370321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12307391 - 2⁶ = 12307327 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12307391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12307301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6153695 + 6153696.

It is an arithmetic number, because the mean of its divisors is an integer number (6153696).

Almost surely, 2^12307391 is an apocalyptic number.

12307391 is a deficient number, since it is larger than the sum of its proper divisors (1).

12307391 is an equidigital number, since it uses as much as digits as its factorization.

12307391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 12307391 is about 3508.1891340120. The cubic root of 12307391 is about 230.8812505349.

The spelling of 12307391 in words is "twelve million, three hundred seven thousand, three hundred ninety-one".