320773823 has 4 divisors (see below), whose sum is σ = 325561560. Its totient is φ = 315986088.

The previous prime is 320773819. The next prime is 320773829. The reversal of 320773823 is 328377023.

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 320773823 - 2² = 320773819 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320773829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2393768 + ... + 2393901.

It is an arithmetic number, because the mean of its divisors is an integer number (81390390).

Almost surely, 2^320773823 is an apocalyptic number.

320773823 is a deficient number, since it is larger than the sum of its proper divisors (4787737).

320773823 is an equidigital number, since it uses as much as digits as its factorization.

320773823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4787736.

The product of its (nonzero) digits is 42336, while the sum is 35.

The square root of 320773823 is about 17910.1597703650. The cubic root of 320773823 is about 684.5412759817.

The spelling of 320773823 in words is "three hundred twenty million, seven hundred seventy-three thousand, eight hundred twenty-three".