14591895431 has 2 divisors, whose sum is σ = 14591895432. Its totient is φ = 14591895430.

The previous prime is 14591895421. The next prime is 14591895433. The reversal of 14591895431 is 13459819541.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14591895431 is a prime.

It is a super-2 number, since 2×14591895431² (a number of 21 digits) contains 22 as substring.

Together with 14591895433, 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 14591895431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14591895433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7295947715 + 7295947716.

It is an arithmetic number, because the mean of its divisors is an integer number (7295947716).

Almost surely, 2^14591895431 is an apocalyptic number.

14591895431 is a deficient number, since it is larger than the sum of its proper divisors (1).

14591895431 is an equidigital number, since it uses as much as digits as its factorization.

14591895431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 777600, while the sum is 50.

The spelling of 14591895431 in words is "fourteen billion, five hundred ninety-one million, eight hundred ninety-five thousand, four hundred thirty-one".