14478887431 has 2 divisors, whose sum is σ = 14478887432. Its totient is φ = 14478887430.

The previous prime is 14478887377. The next prime is 14478887447. The reversal of 14478887431 is 13478887441.

It is a strong prime.

It is an emirp because it is prime and its reverse (13478887441) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14478887431 is a prime.

It is a super-2 number, since 2×14478887431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14478887531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7239443715 + 7239443716.

It is an arithmetic number, because the mean of its divisors is an integer number (7239443716).

Almost surely, 2^14478887431 is an apocalyptic number.

14478887431 is a deficient number, since it is larger than the sum of its proper divisors (1).

14478887431 is an equidigital number, since it uses as much as digits as its factorization.

14478887431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4816896, while the sum is 55.

The spelling of 14478887431 in words is "fourteen billion, four hundred seventy-eight million, eight hundred eighty-seven thousand, four hundred thirty-one".