13443361 has 4 divisors (see below), whose sum is σ = 13594500. Its totient is φ = 13292224.

The previous prime is 13443359. The next prime is 13443371. The reversal of 13443361 is 16334431.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5377761 + 8065600 = 2319^2 + 2840^2 .

It is a cyclic number.

It is not a de Polignac number, because 13443361 - 2¹ = 13443359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13443301) 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, 75436 + ... + 75613.

It is an arithmetic number, because the mean of its divisors is an integer number (3398625).

Almost surely, 2^13443361 is an apocalyptic number.

It is an amenable number.

13443361 is a deficient number, since it is larger than the sum of its proper divisors (151139).

13443361 is an equidigital number, since it uses as much as digits as its factorization.

13443361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151138.

The product of its digits is 2592, while the sum is 25.

The square root of 13443361 is about 3666.5189212658. The cubic root of 13443361 is about 237.7766954286.

Adding to 13443361 its reverse (16334431), we get a palindrome (29777792).

The spelling of 13443361 in words is "thirteen million, four hundred forty-three thousand, three hundred sixty-one".