321334393 has 4 divisors (see below), whose sum is σ = 325736308. Its totient is φ = 316932480.

The previous prime is 321334373. The next prime is 321334439. The reversal of 321334393 is 393433123.

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

It can be written as a sum of positive squares in 2 ways, for example, as 103388224 + 217946169 = 10168^2 + 14763^2 .

It is a cyclic number.

It is not a de Polignac number, because 321334393 - 2²¹ = 319237241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321334333) 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, 2200848 + ... + 2200993.

It is an arithmetic number, because the mean of its divisors is an integer number (81434077).

Almost surely, 2^321334393 is an apocalyptic number.

It is an amenable number.

321334393 is a deficient number, since it is larger than the sum of its proper divisors (4401915).

321334393 is an equidigital number, since it uses as much as digits as its factorization.

321334393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4401914.

The product of its digits is 17496, while the sum is 31.

The square root of 321334393 is about 17925.8024367112. The cubic root of 321334393 is about 684.9398018387.

The spelling of 321334393 in words is "three hundred twenty-one million, three hundred thirty-four thousand, three hundred ninety-three".