320393 has 4 divisors (see below), whose sum is σ = 327888. Its totient is φ = 312900.

The previous prime is 320389. The next prime is 320401. The reversal of 320393 is 393023.

320393 is nontrivially palindromic in base 8.

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 320393 - 2² = 320389 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320303) 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, 3683 + ... + 3768.

It is an arithmetic number, because the mean of its divisors is an integer number (81972).

2³²⁰³⁹³ is an apocalyptic number.

It is an amenable number.

320393 is a deficient number, since it is larger than the sum of its proper divisors (7495).

320393 is an equidigital number, since it uses as much as digits as its factorization.

320393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7494.

The product of its (nonzero) digits is 486, while the sum is 20.

The square root of 320393 is about 566.0326845687. The cubic root of 320393 is about 68.4270272682.

The spelling of 320393 in words is "three hundred twenty thousand, three hundred ninety-three".