13447274431 has 12 divisors (see below), whose sum is σ = 14380844976. Its totient is φ = 12530787200.

The previous prime is 13447274429. The next prime is 13447274437.

13447274431 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 13447274431 - 2¹ = 13447274429 is a prime.

It is a super-2 number, since 2×13447274431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13447274437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134646 + ... + 212188.

It is an arithmetic number, because the mean of its divisors is an integer number (1198403748).

Almost surely, 2^13447274431 is an apocalyptic number.

13447274431 is a deficient number, since it is larger than the sum of its proper divisors (933570545).

13447274431 is an equidigital number, since it uses as much as digits as its factorization.

13447274431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77762 (or 77661 counting only the distinct ones).

The product of its digits is 225792, while the sum is 40.

The spelling of 13447274431 in words is "thirteen billion, four hundred forty-seven million, two hundred seventy-four thousand, four hundred thirty-one".