210700213 has 2 divisors, whose sum is σ = 210700214. Its totient is φ = 210700212.

The previous prime is 210700187. The next prime is 210700247. The reversal of 210700213 is 312007012.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147306769 + 63393444 = 12137^2 + 7962^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210700213 is a prime.

It is a super-3 number, since 3×210700213³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210700513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105350106 + 105350107.

It is an arithmetic number, because the mean of its divisors is an integer number (105350107).

Almost surely, 2^210700213 is an apocalyptic number.

It is an amenable number.

210700213 is a deficient number, since it is larger than the sum of its proper divisors (1).

210700213 is an equidigital number, since it uses as much as digits as its factorization.

210700213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 210700213 is about 14515.5162843076. The cubic root of 210700213 is about 595.0520991030.

Adding to 210700213 its reverse (312007012), we get a palindrome (522707225).

The spelling of 210700213 in words is "two hundred ten million, seven hundred thousand, two hundred thirteen".