13321073 has 8 divisors (see below), whose sum is σ = 13941288. Its totient is φ = 12714624.

The previous prime is 13321051. The next prime is 13321097. The reversal of 13321073 is 37012331.

It is a happy number.

13321073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3125824 + 10195249 = 1768^2 + 3193^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13321073 - 2⁸ = 13320817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13321003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1436 + ... + 5357.

It is an arithmetic number, because the mean of its divisors is an integer number (1742661).

Almost surely, 2^13321073 is an apocalyptic number.

It is an amenable number.

13321073 is a deficient number, since it is larger than the sum of its proper divisors (620215).

13321073 is an equidigital number, since it uses as much as digits as its factorization.

13321073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6883.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 13321073 is about 3649.8045153131. The cubic root of 13321073 is about 237.0535168480.

The spelling of 13321073 in words is "thirteen million, three hundred twenty-one thousand, seventy-three".