320499983 has 2 divisors, whose sum is σ = 320499984. Its totient is φ = 320499982.

The previous prime is 320499937. The next prime is 320500007. The reversal of 320499983 is 389994023.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 320499983 - 2⁸ = 320499727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320499383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160249991 + 160249992.

It is an arithmetic number, because the mean of its divisors is an integer number (160249992).

Almost surely, 2^320499983 is an apocalyptic number.

320499983 is a deficient number, since it is larger than the sum of its proper divisors (1).

320499983 is an equidigital number, since it uses as much as digits as its factorization.

320499983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 419904, while the sum is 47.

The square root of 320499983 is about 17902.5133151745. The cubic root of 320499983 is about 684.3464261765.

The spelling of 320499983 in words is "three hundred twenty million, four hundred ninety-nine thousand, nine hundred eighty-three".