320343 has 4 divisors (see below), whose sum is σ = 427128. Its totient is φ = 213560.

The previous prime is 320339. The next prime is 320377. The reversal of 320343 is 343023.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 320343 - 2² = 320339 is a prime.

It is a D-number.

320343 is a lucky number.

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 320343.

It is not an unprimeable number, because it can be changed into a prime (320303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53388 + ... + 53393.

It is an arithmetic number, because the mean of its divisors is an integer number (106782).

2³²⁰³⁴³ is an apocalyptic number.

320343 is a deficient number, since it is larger than the sum of its proper divisors (106785).

320343 is a wasteful number, since it uses less digits than its factorization.

320343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106784.

The product of its (nonzero) digits is 216, while the sum is 15.

The square root of 320343 is about 565.9885157846. The cubic root of 320343 is about 68.4234675469.

Adding to 320343 its reverse (343023), we get a palindrome (663366).

The spelling of 320343 in words is "three hundred twenty thousand, three hundred forty-three", and thus it is an iban number.