213500211 has 4 divisors (see below), whose sum is σ = 284666952. Its totient is φ = 142333472.

The previous prime is 213500197. The next prime is 213500227. The reversal of 213500211 is 112005312.

213500211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213500211 - 2¹¹ = 213498163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213500311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35583366 + ... + 35583371.

It is an arithmetic number, because the mean of its divisors is an integer number (71166738).

Almost surely, 2^213500211 is an apocalyptic number.

213500211 is a deficient number, since it is larger than the sum of its proper divisors (71166741).

213500211 is an equidigital number, since it uses as much as digits as its factorization.

213500211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71166740.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 213500211 is about 14611.6464164720. The cubic root of 213500211 is about 597.6763935939.

Adding to 213500211 its reverse (112005312), we get a palindrome (325505523).

The spelling of 213500211 in words is "two hundred thirteen million, five hundred thousand, two hundred eleven".