320020323 has 12 divisors (see below), whose sum is σ = 496358280. Its totient is φ = 182868672.

The previous prime is 320020313. The next prime is 320020331. The reversal of 320020323 is 323020023.

It is not a de Polignac number, because 320020323 - 2²⁰ = 318971747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320020303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1088358 + ... + 1088651.

It is an arithmetic number, because the mean of its divisors is an integer number (41363190).

Almost surely, 2^320020323 is an apocalyptic number.

320020323 is a deficient number, since it is larger than the sum of its proper divisors (176337957).

320020323 is a wasteful number, since it uses less digits than its factorization.

320020323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2177026 (or 2177019 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 15.

The square root of 320020323 is about 17889.1118560984. Note that the first 3 decimals coincide. The cubic root of 320020323 is about 684.0048582980.

Adding to 320020323 its reverse (323020023), we get a palindrome (643040346).

The spelling of 320020323 in words is "three hundred twenty million, twenty thousand, three hundred twenty-three".