320043 has 4 divisors (see below), whose sum is σ = 426728. Its totient is φ = 213360.

The previous prime is 320041. The next prime is 320053. The reversal of 320043 is 340023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 340023 = 3 ⋅113341.

It is not a de Polignac number, because 320043 - 2¹ = 320041 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320041) 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, 53338 + ... + 53343.

It is an arithmetic number, because the mean of its divisors is an integer number (106682).

2³²⁰⁰⁴³ is an apocalyptic number.

320043 is a deficient number, since it is larger than the sum of its proper divisors (106685).

320043 is a wasteful number, since it uses less digits than its factorization.

320043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106684.

The product of its (nonzero) digits is 72, while the sum is 12.

The square root of 320043 is about 565.7234306620. The cubic root of 320043 is about 68.4021014368.

Adding to 320043 its reverse (340023), we get a palindrome (660066).

The spelling of 320043 in words is "three hundred twenty thousand, forty-three", and thus it is an iban number.