14311391 has 2 divisors, whose sum is σ = 14311392. Its totient is φ = 14311390.

The previous prime is 14311387. The next prime is 14311417. The reversal of 14311391 is 19311341.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 14311391 - 2² = 14311387 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14311361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7155695 + 7155696.

It is an arithmetic number, because the mean of its divisors is an integer number (7155696).

Almost surely, 2^14311391 is an apocalyptic number.

14311391 is a deficient number, since it is larger than the sum of its proper divisors (1).

14311391 is an equidigital number, since it uses as much as digits as its factorization.

14311391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324, while the sum is 23.

The square root of 14311391 is about 3783.0399152005. The cubic root of 14311391 is about 242.7880362442.

The spelling of 14311391 in words is "fourteen million, three hundred eleven thousand, three hundred ninety-one".