12343391 has 2 divisors, whose sum is σ = 12343392. Its totient is φ = 12343390.

The previous prime is 12343349. The next prime is 12343393. The reversal of 12343391 is 19334321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12343391 - 2⁶ = 12343327 is a prime.

Together with 12343393, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12343391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12343393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6171695 + 6171696.

It is an arithmetic number, because the mean of its divisors is an integer number (6171696).

Almost surely, 2^12343391 is an apocalyptic number.

12343391 is a deficient number, since it is larger than the sum of its proper divisors (1).

12343391 is an equidigital number, since it uses as much as digits as its factorization.

12343391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 26.

The square root of 12343391 is about 3513.3162396801. The cubic root of 12343391 is about 231.1061461290.

The spelling of 12343391 in words is "twelve million, three hundred forty-three thousand, three hundred ninety-one".