320120983 has 12 divisors (see below), whose sum is σ = 396161328. Its totient is φ = 253281600.

The previous prime is 320120981. The next prime is 320120993. The reversal of 320120983 is 389021023.

It is not a de Polignac number, because 320120983 - 2¹ = 320120981 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 (320120981) 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 11 ways as a sum of consecutive naturals, for example, 134118 + ... + 136483.

It is an arithmetic number, because the mean of its divisors is an integer number (33013444).

Almost surely, 2^320120983 is an apocalyptic number.

320120983 is a deficient number, since it is larger than the sum of its proper divisors (76040345).

320120983 is a wasteful number, since it uses less digits than its factorization.

320120983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270634 (or 270621 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 320120983 is about 17891.9250780904. The cubic root of 320120983 is about 684.0765669848.

The spelling of 320120983 in words is "three hundred twenty million, one hundred twenty thousand, nine hundred eighty-three".