13321144 has 8 divisors (see below), whose sum is σ = 24977160. Its totient is φ = 6660568.

The previous prime is 13321129. The next prime is 13321151. The reversal of 13321144 is 44112331.

13321144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 832564 + ... + 832579.

It is an arithmetic number, because the mean of its divisors is an integer number (3122145).

Almost surely, 2^13321144 is an apocalyptic number.

It is an amenable number.

13321144 is a deficient number, since it is larger than the sum of its proper divisors (11656016).

13321144 is a wasteful number, since it uses less digits than its factorization.

13321144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665149 (or 1665145 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 13321144 is about 3649.8142418485. The cubic root of 13321144 is about 237.0539380045.

Adding to 13321144 its reverse (44112331), we get a palindrome (57433475).

The spelling of 13321144 in words is "thirteen million, three hundred twenty-one thousand, one hundred forty-four".