13444244431 has 4 divisors (see below), whose sum is σ = 13577355864. Its totient is φ = 13311133000.

The previous prime is 13444244423. The next prime is 13444244449.

13444244431 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13444244431 - 2³ = 13444244423 is a prime.

It is a super-2 number, since 2×13444244431² (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 (13444244461) 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 3 ways as a sum of consecutive naturals, for example, 66555565 + ... + 66555766.

It is an arithmetic number, because the mean of its divisors is an integer number (3394338966).

Almost surely, 2^13444244431 is an apocalyptic number.

13444244431 is a deficient number, since it is larger than the sum of its proper divisors (133111433).

13444244431 is a wasteful number, since it uses less digits than its factorization.

13444244431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133111432.

The product of its digits is 73728, while the sum is 34.

The spelling of 13444244431 in words is "thirteen billion, four hundred forty-four million, two hundred forty-four thousand, four hundred thirty-one".