13243031444 has 12 divisors (see below), whose sum is σ = 23178084468. Its totient is φ = 6620721600.

The previous prime is 13243031441. The next prime is 13243031449. The reversal of 13243031444 is 44413034231.

It is a happy number.

13243031444 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 2 ways, for example, as 6252064900 + 6990966544 = 79070^2 + 83612^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13243031441) 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 3 ways as a sum of consecutive naturals, for example, 160187 + ... + 228354.

It is an arithmetic number, because the mean of its divisors is an integer number (1931507039).

Almost surely, 2^13243031444 is an apocalyptic number.

It is an amenable number.

13243031444 is a deficient number, since it is larger than the sum of its proper divisors (9935053024).

13243031444 is a wasteful number, since it uses less digits than its factorization.

13243031444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397066 (or 397064 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 13243031444 its reverse (44413034231), we get a palindrome (57656065675).

The spelling of 13243031444 in words is "thirteen billion, two hundred forty-three million, thirty-one thousand, four hundred forty-four".