7018213 has 2 divisors, whose sum is σ = 7018214. Its totient is φ = 7018212.

The previous prime is 7018199. The next prime is 7018259. The reversal of 7018213 is 3128107.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4255969 + 2762244 = 2063^2 + 1662^2 .

It is an emirp because it is prime and its reverse (3128107) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7018213 - 2⁹ = 7017701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7018513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3509106 + 3509107.

It is an arithmetic number, because the mean of its divisors is an integer number (3509107).

Almost surely, 2^7018213 is an apocalyptic number.

It is an amenable number.

7018213 is a deficient number, since it is larger than the sum of its proper divisors (1).

7018213 is an equidigital number, since it uses as much as digits as its factorization.

7018213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 7018213 is about 2649.1910085911. The cubic root of 7018213 is about 191.4588803859.

The spelling of 7018213 in words is "seven million, eighteen thousand, two hundred thirteen".