320220983 has 2 divisors, whose sum is σ = 320220984. Its totient is φ = 320220982.

The previous prime is 320220961. The next prime is 320221007. The reversal of 320220983 is 389022023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320220983 - 2²⁰ = 319172407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320220913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160110491 + 160110492.

It is an arithmetic number, because the mean of its divisors is an integer number (160110492).

Almost surely, 2^320220983 is an apocalyptic number.

320220983 is a deficient number, since it is larger than the sum of its proper divisors (1).

320220983 is an equidigital number, since it uses as much as digits as its factorization.

320220983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 320220983 is about 17894.7194166324. The cubic root of 320220983 is about 684.1477906142.

The spelling of 320220983 in words is "three hundred twenty million, two hundred twenty thousand, nine hundred eighty-three".