320345 has 8 divisors (see below), whose sum is σ = 389760. Its totient is φ = 252720.

The previous prime is 320339. The next prime is 320377. The reversal of 320345 is 543023.

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

It is not a de Polignac number, because 320345 - 2⁴ = 320329 is a prime.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 320345.

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, 11 + ... + 800.

It is an arithmetic number, because the mean of its divisors is an integer number (48720).

2³²⁰³⁴⁵ is an apocalyptic number.

It is an amenable number.

320345 is a deficient number, since it is larger than the sum of its proper divisors (69415).

320345 is an equidigital number, since it uses as much as digits as its factorization.

320345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895.

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 320345 is about 565.9902826021. The cubic root of 320345 is about 68.4236099428.

Adding to 320345 its reverse (543023), we get a palindrome (863368).

The spelling of 320345 in words is "three hundred twenty thousand, three hundred forty-five".