13567321 has 4 divisors (see below), whose sum is σ = 13637812. Its totient is φ = 13496832.

The previous prime is 13567297. The next prime is 13567327. The reversal of 13567321 is 12376531.

13567321 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 an emirpimes, since its reverse is a distinct semiprime: 12376531 = 127 ⋅97453.

It can be written as a sum of positive squares in 2 ways, for example, as 6702921 + 6864400 = 2589^2 + 2620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13567321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13567321.

It is not an unprimeable number, because it can be changed into a prime (13567327) 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, 34956 + ... + 35341.

It is an arithmetic number, because the mean of its divisors is an integer number (3409453).

Almost surely, 2^13567321 is an apocalyptic number.

It is an amenable number.

13567321 is a deficient number, since it is larger than the sum of its proper divisors (70491).

13567321 is an equidigital number, since it uses as much as digits as its factorization.

13567321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70490.

The product of its digits is 3780, while the sum is 28.

The square root of 13567321 is about 3683.3844491174. The cubic root of 13567321 is about 238.5052995730.

The spelling of 13567321 in words is "thirteen million, five hundred sixty-seven thousand, three hundred twenty-one".