213430212 has 18 divisors (see below), whose sum is σ = 539504238. Its totient is φ = 71143392.

The previous prime is 213430207. The next prime is 213430213. The reversal of 213430212 is 212034312.

213430212 is a `hidden beast` number, since 21 + 3 + 430 + 212 = 666.

It can be written as a sum of positive squares in only one way, i.e., 197796096 + 15634116 = 14064^2 + 3954^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

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 5 ways as a sum of consecutive naturals, for example, 2964273 + ... + 2964344.

Almost surely, 2^213430212 is an apocalyptic number.

It is an amenable number.

213430212 is an abundant number, since it is smaller than the sum of its proper divisors (326074026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213430212 is a wasteful number, since it uses less digits than its factorization.

213430212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5928627 (or 5928622 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 213430212 is about 14609.2509048205. The cubic root of 213430212 is about 597.6110676273.

Adding to 213430212 its reverse (212034312), we get a palindrome (425464524).

The spelling of 213430212 in words is "two hundred thirteen million, four hundred thirty thousand, two hundred twelve".