320312983 has 2 divisors, whose sum is σ = 320312984. Its totient is φ = 320312982.

The previous prime is 320312969. The next prime is 320312989. The reversal of 320312983 is 389213023.

It is a strong prime.

It is an emirp because it is prime and its reverse (389213023) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320312983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320312989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160156491 + 160156492.

It is an arithmetic number, because the mean of its divisors is an integer number (160156492).

Almost surely, 2^320312983 is an apocalyptic number.

320312983 is a deficient number, since it is larger than the sum of its proper divisors (1).

320312983 is an equidigital number, since it uses as much as digits as its factorization.

320312983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 320312983 is about 17897.2898227637. The cubic root of 320312983 is about 684.2133032584.

The spelling of 320312983 in words is "three hundred twenty million, three hundred twelve thousand, nine hundred eighty-three".