3243630281 has 2 divisors, whose sum is σ = 3243630282. Its totient is φ = 3243630280.

The previous prime is 3243630233. The next prime is 3243630307. The reversal of 3243630281 is 1820363423.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2508407056 + 735223225 = 50084^2 + 27115^2 .

It is a cyclic number.

It is not a de Polignac number, because 3243630281 - 2⁶ = 3243630217 is a prime.

It is a super-2 number, since 2×3243630281² = 21042274799640277922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3243630211) 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, 1621815140 + 1621815141.

It is an arithmetic number, because the mean of its divisors is an integer number (1621815141).

Almost surely, 2^3243630281 is an apocalyptic number.

It is an amenable number.

3243630281 is a deficient number, since it is larger than the sum of its proper divisors (1).

3243630281 is an equidigital number, since it uses as much as digits as its factorization.

3243630281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 3243630281 is about 56952.8777236059. The cubic root of 3243630281 is about 1480.2796952823.

The spelling of 3243630281 in words is "three billion, two hundred forty-three million, six hundred thirty thousand, two hundred eighty-one".