320341321 has 4 divisors (see below), whose sum is σ = 330674944. Its totient is φ = 310007700.

The previous prime is 320341313. The next prime is 320341339. The reversal of 320341321 is 123143023.

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 320341321 - 2³ = 320341313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320341361) 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, 5166765 + ... + 5166826.

It is an arithmetic number, because the mean of its divisors is an integer number (82668736).

Almost surely, 2^320341321 is an apocalyptic number.

320341321 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

320341321 is a deficient number, since it is larger than the sum of its proper divisors (10333623).

320341321 is a wasteful number, since it uses less digits than its factorization.

320341321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10333622.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 320341321 is about 17898.0814893664. The cubic root of 320341321 is about 684.2334800499.

Adding to 320341321 its reverse (123143023), we get a palindrome (443484344).

The spelling of 320341321 in words is "three hundred twenty million, three hundred forty-one thousand, three hundred twenty-one".