320243 has 8 divisors (see below), whose sum is σ = 399360. Its totient is φ = 249480.

The previous prime is 320239. The next prime is 320267. The reversal of 320243 is 342023.

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

It is not a de Polignac number, because 320243 - 2² = 320239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320213) 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 7 ways as a sum of consecutive naturals, for example, 2003 + ... + 2156.

It is an arithmetic number, because the mean of its divisors is an integer number (49920).

2³²⁰²⁴³ is an apocalyptic number.

320243 is a deficient number, since it is larger than the sum of its proper divisors (79117).

320243 is a wasteful number, since it uses less digits than its factorization.

320243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4177.

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 320243 is about 565.9001678742. The cubic root of 320243 is about 68.4163469929.

Adding to 320243 its reverse (342023), we get a palindrome (662266).

The spelling of 320243 in words is "three hundred twenty thousand, two hundred forty-three", and thus it is an iban number.