321310345 has 8 divisors (see below), whose sum is σ = 402336576. Its totient is φ = 245872176.

The previous prime is 321310321. The next prime is 321310351. The reversal of 321310345 is 543013123.

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

It is a cyclic number.

It is not a de Polignac number, because 321310345 - 2⁵ = 321310313 is a prime.

It is a Duffinian number.

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, 1396887 + ... + 1397116.

It is an arithmetic number, because the mean of its divisors is an integer number (50292072).

Almost surely, 2^321310345 is an apocalyptic number.

It is an amenable number.

321310345 is a deficient number, since it is larger than the sum of its proper divisors (81026231).

321310345 is a wasteful number, since it uses less digits than its factorization.

321310345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2794031.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 321310345 is about 17925.1316592096. The cubic root of 321310345 is about 684.9227149207.

Adding to 321310345 its reverse (543013123), we get a palindrome (864323468).

The spelling of 321310345 in words is "three hundred twenty-one million, three hundred ten thousand, three hundred forty-five".