13143044321 has 6 divisors (see below), whose sum is σ = 14446486866. Its totient is φ = 11948222000.

The previous prime is 13143044311. The next prime is 13143044377. The reversal of 13143044321 is 12344034131.

It is a happy number.

13143044321 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 only one way, i.e., 9156384721 + 3986659600 = 95689^2 + 63140^2 .

It is a de Polignac number, because none of the positive numbers 2^k-13143044321 is a prime.

It is a super-2 number, since 2×13143044321² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13143044311) 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 5 ways as a sum of consecutive naturals, for example, 54309980 + ... + 54310221.

It is an arithmetic number, because the mean of its divisors is an integer number (2407747811).

Almost surely, 2^13143044321 is an apocalyptic number.

13143044321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13143044321 is a deficient number, since it is larger than the sum of its proper divisors (1303442545).

13143044321 is a wasteful number, since it uses less digits than its factorization.

13143044321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108620223 (or 108620212 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 13143044321 its reverse (12344034131), we get a palindrome (25487078452).

The spelling of 13143044321 in words is "thirteen billion, one hundred forty-three million, forty-four thousand, three hundred twenty-one".