13243403431144 has 32 divisors (see below), whose sum is σ = 25437384390600. Its totient is φ = 6460105492480.

The previous prime is 13243403431087. The next prime is 13243403431147. The reversal of 13243403431144 is 44113430434231.

13243403431144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 13007924222500 + 235479208644 = 3606650^2 + 485262^2 .

It is not an unprimeable number, because it can be changed into a prime (13243403431147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26900352 + ... + 27388240.

Almost surely, 2^{13243403431144} is an apocalyptic number.

It is an amenable number.

13243403431144 is a deficient number, since it is larger than the sum of its proper divisors (12193980959456).

13243403431144 is a wasteful number, since it uses less digits than its factorization.

13243403431144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570693 (or 570689 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 37.

Adding to 13243403431144 its reverse (44113430434231), we get a palindrome (57356833865375).

The spelling of 13243403431144 in words is "thirteen trillion, two hundred forty-three billion, four hundred three million, four hundred thirty-one thousand, one hundred forty-four".