13444444431 has 36 divisors (see below), whose sum is σ = 21922654936. Its totient is φ = 7927904160.

The previous prime is 13444444421. The next prime is 13444444463.

13444444431 is a `hidden beast` number, since 134 + 44 + 44 + 443 + 1 = 666.

13444444431 is nontrivially palindromic in base 10.

13444444431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13444444431 - 2⁶ = 13444444367 is a prime.

It is a super-2 number, since 2×13444444431² (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 (13444444421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 126541 + ... + 207126.

Almost surely, 2^13444444431 is an apocalyptic number.

13444444431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13444444431 is a deficient number, since it is larger than the sum of its proper divisors (8478210505).

13444444431 is a wasteful number, since it uses less digits than its factorization.

13444444431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333732 (or 333718 counting only the distinct ones).

The product of its digits is 147456, while the sum is 36.

It can be divided in two parts, 13 and 444444431, that added together give a palindrome (444444444).

The spelling of 13444444431 in words is "thirteen billion, four hundred forty-four million, four hundred forty-four thousand, four hundred thirty-one".