320330323081 has 2 divisors, whose sum is σ = 320330323082. Its totient is φ = 320330323080.

The previous prime is 320330322973. The next prime is 320330323141. The reversal of 320330323081 is 180323033023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166838754681 + 153491568400 = 408459^2 + 391780^2 .

It is a cyclic number.

It is not a de Polignac number, because 320330323081 - 2⁷ = 320330322953 is a prime.

It is a super-2 number, since 2×320330323081² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (320330324081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160165161540 + 160165161541.

It is an arithmetic number, because the mean of its divisors is an integer number (160165161541).

Almost surely, 2^320330323081 is an apocalyptic number.

It is an amenable number.

320330323081 is a deficient number, since it is larger than the sum of its proper divisors (1).

320330323081 is an equidigital number, since it uses as much as digits as its factorization.

320330323081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 28.

The spelling of 320330323081 in words is "three hundred twenty billion, three hundred thirty million, three hundred twenty-three thousand, eighty-one".