13201431444 has 18 divisors (see below), whose sum is σ = 33370285130. Its totient is φ = 4400477136.

The previous prime is 13201431431. The next prime is 13201431511. The reversal of 13201431444 is 44413410231.

13201431444 is a `hidden beast` number, since 13 + 201 + 4 + 3 + 1 + 444 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10955808900 + 2245622544 = 104670^2 + 47388^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 183353179 + ... + 183353250.

Almost surely, 2^13201431444 is an apocalyptic number.

It is an amenable number.

13201431444 is an abundant number, since it is smaller than the sum of its proper divisors (20168853686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13201431444 is a wasteful number, since it uses less digits than its factorization.

13201431444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366706439 (or 366706434 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 13201431444 its reverse (44413410231), we get a palindrome (57614841675).

The spelling of 13201431444 in words is "thirteen billion, two hundred one million, four hundred thirty-one thousand, four hundred forty-four".