211334213 has 4 divisors (see below), whose sum is σ = 216488748. Its totient is φ = 206179680.

The previous prime is 211334183. The next prime is 211334237. The reversal of 211334213 is 312433112.

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

It can be written as a sum of positive squares in 2 ways, for example, as 64609444 + 146724769 = 8038^2 + 12113^2 .

It is a cyclic number.

It is not a de Polignac number, because 211334213 - 2⁸ = 211333957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211334413) 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, 2577206 + ... + 2577287.

It is an arithmetic number, because the mean of its divisors is an integer number (54122187).

Almost surely, 2^211334213 is an apocalyptic number.

It is an amenable number.

211334213 is a deficient number, since it is larger than the sum of its proper divisors (5154535).

211334213 is an equidigital number, since it uses as much as digits as its factorization.

211334213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5154534.

The product of its digits is 432, while the sum is 20.

The square root of 211334213 is about 14537.3385803592. The cubic root of 211334213 is about 595.6483416033.

Adding to 211334213 its reverse (312433112), we get a palindrome (523767325).

The spelling of 211334213 in words is "two hundred eleven million, three hundred thirty-four thousand, two hundred thirteen".