13231344 has 80 divisors (see below), whose sum is σ = 39854592. Its totient is φ = 3704064.

The previous prime is 13231343. The next prime is 13231357. The reversal of 13231344 is 44313231.

13231344 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 13231344.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17437 + ... + 18179.

Almost surely, 2^13231344 is an apocalyptic number.

13231344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13231344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19927296).

13231344 is an abundant number, since it is smaller than the sum of its proper divisors (26623248).

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

13231344 is a wasteful number, since it uses less digits than its factorization.

13231344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814 (or 808 counting only the distinct ones).

The product of its digits is 864, while the sum is 21.

The square root of 13231344 is about 3637.4914432889. The cubic root of 13231344 is about 236.5200634958.

Adding to 13231344 its reverse (44313231), we get a palindrome (57544575).

The spelling of 13231344 in words is "thirteen million, two hundred thirty-one thousand, three hundred forty-four".