320783 has 4 divisors (see below), whose sum is σ = 326280. Its totient is φ = 315288.

The previous prime is 320767. The next prime is 320791. The reversal of 320783 is 387023.

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 320783 - 2⁴ = 320767 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320713) 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, 2660 + ... + 2777.

It is an arithmetic number, because the mean of its divisors is an integer number (81570).

2³²⁰⁷⁸³ is an apocalyptic number.

320783 is a deficient number, since it is larger than the sum of its proper divisors (5497).

320783 is an equidigital number, since it uses as much as digits as its factorization.

320783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5496.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 320783 is about 566.3770828697. The cubic root of 320783 is about 68.4547803920.

The spelling of 320783 in words is "three hundred twenty thousand, seven hundred eighty-three".