7285312217 has 2 divisors, whose sum is σ = 7285312218. Its totient is φ = 7285312216.

The previous prime is 7285312189. The next prime is 7285312273. The reversal of 7285312217 is 7122135827.

7285312217 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3955906816 + 3329405401 = 62896^2 + 57701^2 .

It is a cyclic number.

It is not a de Polignac number, because 7285312217 - 2¹⁰ = 7285311193 is a prime.

It is not a weakly prime, because it can be changed into another prime (7285312117) 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, 3642656108 + 3642656109.

It is an arithmetic number, because the mean of its divisors is an integer number (3642656109).

Almost surely, 2^7285312217 is an apocalyptic number.

It is an amenable number.

7285312217 is a deficient number, since it is larger than the sum of its proper divisors (1).

7285312217 is an equidigital number, since it uses as much as digits as its factorization.

7285312217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47040, while the sum is 38.

The square root of 7285312217 is about 85354.0404257467. The cubic root of 7285312217 is about 1938.5755137078.

The spelling of 7285312217 in words is "seven billion, two hundred eighty-five million, three hundred twelve thousand, two hundred seventeen".