320421114257 has 2 divisors, whose sum is σ = 320421114258. Its totient is φ = 320421114256.

The previous prime is 320421114197. The next prime is 320421114301. The reversal of 320421114257 is 752411124023.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 287613399616 + 32807714641 = 536296^2 + 181129^2 .

It is a cyclic number.

It is not a de Polignac number, because 320421114257 - 2¹⁴ = 320421097873 is a prime.

It is not a weakly prime, because it can be changed into another prime (320421614257) 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, 160210557128 + 160210557129.

It is an arithmetic number, because the mean of its divisors is an integer number (160210557129).

Almost surely, 2^320421114257 is an apocalyptic number.

It is an amenable number.

320421114257 is a deficient number, since it is larger than the sum of its proper divisors (1).

320421114257 is an equidigital number, since it uses as much as digits as its factorization.

320421114257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 32.

The spelling of 320421114257 in words is "three hundred twenty billion, four hundred twenty-one million, one hundred fourteen thousand, two hundred fifty-seven".