320385803 has 4 divisors (see below), whose sum is σ = 321526248. Its totient is φ = 319245360.

The previous prime is 320385799. The next prime is 320385827. The reversal of 320385803 is 308583023.

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 320385803 - 2² = 320385799 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320385803.

It is not an unprimeable number, because it can be changed into a prime (320385853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 569801 + ... + 570362.

It is an arithmetic number, because the mean of its divisors is an integer number (80381562).

Almost surely, 2^320385803 is an apocalyptic number.

320385803 is a deficient number, since it is larger than the sum of its proper divisors (1140445).

320385803 is a wasteful number, since it uses less digits than its factorization.

320385803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140444.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 320385803 is about 17899.3240933841. The cubic root of 320385803 is about 684.2651490469.

The spelling of 320385803 in words is "three hundred twenty million, three hundred eighty-five thousand, eight hundred three".