13143401344 has 32 divisors (see below), whose sum is σ = 27087028200. Its totient is φ = 6345088512.

The previous prime is 13143401333. The next prime is 13143401347. The reversal of 13143401344 is 44310434131.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×13143401344² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13143401347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1766682 + ... + 1774105.

Almost surely, 2^13143401344 is an apocalyptic number.

It is an amenable number.

13143401344 is an abundant number, since it is smaller than the sum of its proper divisors (13943626856).

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

13143401344 is an equidigital number, since it uses as much as digits as its factorization.

13143401344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3540830 (or 3540818 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 13143401344 its reverse (44310434131), we get a palindrome (57453835475).

The spelling of 13143401344 in words is "thirteen billion, one hundred forty-three million, four hundred one thousand, three hundred forty-four".