13315231344 has 20 divisors (see below), whose sum is σ = 34397681096. Its totient is φ = 4438410432.

The previous prime is 13315231343. The next prime is 13315231367. The reversal of 13315231344 is 44313251331.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13315231343) 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, 138700279 + ... + 138700374.

Almost surely, 2^13315231344 is an apocalyptic number.

It is an amenable number.

13315231344 is an abundant number, since it is smaller than the sum of its proper divisors (21082449752).

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

13315231344 is a wasteful number, since it uses less digits than its factorization.

13315231344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277400664 (or 277400658 counting only the distinct ones).

The product of its digits is 12960, while the sum is 30.

Adding to 13315231344 its reverse (44313251331), we get a palindrome (57628482675).

The spelling of 13315231344 in words is "thirteen billion, three hundred fifteen million, two hundred thirty-one thousand, three hundred forty-four".