13361321 has 4 divisors (see below), whose sum is σ = 13942272. Its totient is φ = 12780372.

The previous prime is 13361297. The next prime is 13361333. The reversal of 13361321 is 12316331.

It is a happy number.

13361321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12316331 = 31 ⋅397301.

It is a cyclic number.

It is not a de Polignac number, because 13361321 - 2²² = 9167017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13361293 and 13361302.

It is not an unprimeable number, because it can be changed into a prime (13361021) 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, 290441 + ... + 290486.

It is an arithmetic number, because the mean of its divisors is an integer number (3485568).

Almost surely, 2^13361321 is an apocalyptic number.

It is an amenable number.

13361321 is a deficient number, since it is larger than the sum of its proper divisors (580951).

13361321 is an equidigital number, since it uses as much as digits as its factorization.

13361321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580950.

The product of its digits is 324, while the sum is 20.

The square root of 13361321 is about 3655.3140767929. The cubic root of 13361321 is about 237.2920195853.

Adding to 13361321 its reverse (12316331), we get a palindrome (25677652).

The spelling of 13361321 in words is "thirteen million, three hundred sixty-one thousand, three hundred twenty-one".