320397 has 32 divisors (see below), whose sum is σ = 568320. Its totient is φ = 155520.

The previous prime is 320389. The next prime is 320401. The reversal of 320397 is 793023.

It is not a de Polignac number, because 320397 - 2³ = 320389 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 320397.

It is not an unprimeable number, because it can be changed into a prime (320317) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4353 + ... + 4425.

It is an arithmetic number, because the mean of its divisors is an integer number (17760).

2³²⁰³⁹⁷ is an apocalyptic number.

It is an amenable number.

320397 is a deficient number, since it is larger than the sum of its proper divisors (247923).

320397 is a wasteful number, since it uses less digits than its factorization.

320397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113.

The product of its (nonzero) digits is 1134, while the sum is 24.

The square root of 320397 is about 566.0362179225. The cubic root of 320397 is about 68.4273120299.

It can be divided in two parts, 320 and 397, that added together give a palindrome (717).

The spelling of 320397 in words is "three hundred twenty thousand, three hundred ninety-seven".