213430211 has 4 divisors (see below), whose sum is σ = 224663400. Its totient is φ = 202197024.

The previous prime is 213430207. The next prime is 213430213. The reversal of 213430211 is 112034312.

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 213430211 - 2² = 213430207 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213430211.

It is not an unprimeable number, because it can be changed into a prime (213430213) 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, 5616566 + ... + 5616603.

It is an arithmetic number, because the mean of its divisors is an integer number (56165850).

Almost surely, 2^213430211 is an apocalyptic number.

213430211 is a deficient number, since it is larger than the sum of its proper divisors (11233189).

213430211 is a wasteful number, since it uses less digits than its factorization.

213430211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11233188.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 213430211 is about 14609.2508705957. The cubic root of 213430211 is about 597.6110666939.

Adding to 213430211 its reverse (112034312), we get a palindrome (325464523).

The spelling of 213430211 in words is "two hundred thirteen million, four hundred thirty thousand, two hundred eleven".