320843 has 2 divisors, whose sum is σ = 320844. Its totient is φ = 320842.

The previous prime is 320839. The next prime is 320851. The reversal of 320843 is 348023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320843 - 2² = 320839 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 320843.

It is not a weakly prime, because it can be changed into another prime (320833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160421 + 160422.

It is an arithmetic number, because the mean of its divisors is an integer number (160422).

2³²⁰⁸⁴³ is an apocalyptic number.

320843 is a deficient number, since it is larger than the sum of its proper divisors (1).

320843 is an equidigital number, since it uses as much as digits as its factorization.

320843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 320843 is about 566.4300486380. The cubic root of 320843 is about 68.4590481065.

Adding to 320843 its reverse (348023), we get a palindrome (668866).

The spelling of 320843 in words is "three hundred twenty thousand, eight hundred forty-three".