320313132281 has 2 divisors, whose sum is σ = 320313132282. Its totient is φ = 320313132280.

The previous prime is 320313132247. The next prime is 320313132289. The reversal of 320313132281 is 182231313023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 316846277881 + 3466854400 = 562891^2 + 58880^2 .

It is a cyclic number.

It is not a de Polignac number, because 320313132281 - 2³⁸ = 45435225337 is a prime.

It is a super-2 number, since 2×320313132281² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (320313132289) 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, 160156566140 + 160156566141.

It is an arithmetic number, because the mean of its divisors is an integer number (160156566141).

Almost surely, 2^320313132281 is an apocalyptic number.

It is an amenable number.

320313132281 is a deficient number, since it is larger than the sum of its proper divisors (1).

320313132281 is an equidigital number, since it uses as much as digits as its factorization.

320313132281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The spelling of 320313132281 in words is "three hundred twenty billion, three hundred thirteen million, one hundred thirty-two thousand, two hundred eighty-one".