213135211 has 2 divisors, whose sum is σ = 213135212. Its totient is φ = 213135210.

The previous prime is 213135191. The next prime is 213135301. The reversal of 213135211 is 112531312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213135211 - 2¹¹ = 213133163 is a prime.

It is not a weakly prime, because it can be changed into another prime (213135011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106567605 + 106567606.

It is an arithmetic number, because the mean of its divisors is an integer number (106567606).

Almost surely, 2^213135211 is an apocalyptic number.

213135211 is a deficient number, since it is larger than the sum of its proper divisors (1).

213135211 is an equidigital number, since it uses as much as digits as its factorization.

213135211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 180, while the sum is 19.

The square root of 213135211 is about 14599.1510369610. The cubic root of 213135211 is about 597.3356034242.

Adding to 213135211 its reverse (112531312), we get a palindrome (325666523).

It can be divided in two parts, 213 and 135211, that added together give a square (135424 = 368²).

The spelling of 213135211 in words is "two hundred thirteen million, one hundred thirty-five thousand, two hundred eleven".