321343345 has 8 divisors (see below), whose sum is σ = 398909160. Its totient is φ = 248209920.

The previous prime is 321343339. The next prime is 321343391. The reversal of 321343345 is 543343123.

It can be written as a sum of positive squares in 4 ways, for example, as 2792241 + 318551104 = 1671^2 + 17848^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-321343345 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1107936 + ... + 1108225.

It is an arithmetic number, because the mean of its divisors is an integer number (49863645).

Almost surely, 2^321343345 is an apocalyptic number.

It is an amenable number.

321343345 is a deficient number, since it is larger than the sum of its proper divisors (77565815).

321343345 is a wasteful number, since it uses less digits than its factorization.

321343345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2216195.

The product of its digits is 12960, while the sum is 28.

The square root of 321343345 is about 17926.0521309071. The cubic root of 321343345 is about 684.9461623200.

Adding to 321343345 its reverse (543343123), we get a palindrome (864686468).

The spelling of 321343345 in words is "three hundred twenty-one million, three hundred forty-three thousand, three hundred forty-five".