321397067 has 4 divisors (see below), whose sum is σ = 325008360. Its totient is φ = 317785776.

The previous prime is 321397061. The next prime is 321397081. The reversal of 321397067 is 760793123.

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

It is a cyclic number.

It is not a de Polignac number, because 321397067 - 2⁶ = 321397003 is a prime.

It is a super-3 number, since 3×321397067³ (a number of 26 digits) contains 333 as substring.

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 321397067.

It is not an unprimeable number, because it can be changed into a prime (321397061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1805513 + ... + 1805690.

It is an arithmetic number, because the mean of its divisors is an integer number (81252090).

Almost surely, 2^321397067 is an apocalyptic number.

321397067 is a deficient number, since it is larger than the sum of its proper divisors (3611293).

321397067 is an equidigital number, since it uses as much as digits as its factorization.

321397067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3611292.

The product of its (nonzero) digits is 47628, while the sum is 38.

The square root of 321397067 is about 17927.5505019509. The cubic root of 321397067 is about 684.9843298314.

The spelling of 321397067 in words is "three hundred twenty-one million, three hundred ninety-seven thousand, sixty-seven".