13731344 has 40 divisors (see below), whose sum is σ = 29521920. Its totient is φ = 6134400.

The previous prime is 13731343. The next prime is 13731353. The reversal of 13731344 is 44313731.

It is not an unprimeable number, because it can be changed into a prime (13731343) 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, 10097 + ... + 11375.

It is an arithmetic number, because the mean of its divisors is an integer number (738048).

Almost surely, 2^13731344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13731344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14760960).

13731344 is an abundant number, since it is smaller than the sum of its proper divisors (15790576).

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

13731344 is a wasteful number, since it uses less digits than its factorization.

13731344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359 (or 1353 counting only the distinct ones).

The product of its digits is 3024, while the sum is 26.

The square root of 13731344 is about 3705.5828151588. The cubic root of 13731344 is about 239.4625938387.

The spelling of 13731344 in words is "thirteen million, seven hundred thirty-one thousand, three hundred forty-four".