1327321 has 4 divisors (see below), whose sum is σ = 1397200. Its totient is φ = 1257444.

The previous prime is 1327303. The next prime is 1327349. The reversal of 1327321 is 1237231.

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.

It is a cyclic number.

It is not a de Polignac number, because 1327321 - 2⁵ = 1327289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 69859 = 1327321 / (1 + 3 + 2 + 7 + 3 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1327351) 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, 34911 + ... + 34948.

It is an arithmetic number, because the mean of its divisors is an integer number (349300).

2^1327321 is an apocalyptic number.

It is an amenable number.

1327321 is a deficient number, since it is larger than the sum of its proper divisors (69879).

1327321 is an equidigital number, since it uses as much as digits as its factorization.

1327321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69878.

The product of its digits is 252, while the sum is 19.

The square root of 1327321 is about 1152.0941801780. The cubic root of 1327321 is about 109.8985566141.

The spelling of 1327321 in words is "one million, three hundred twenty-seven thousand, three hundred twenty-one".