213211330 has 8 divisors (see below), whose sum is σ = 383780412. Its totient is φ = 85284528.

The previous prime is 213211267. The next prime is 213211373. The reversal of 213211330 is 33112312.

It can be written as a sum of positive squares in 2 ways, for example, as 210743289 + 2468041 = 14517^2 + 1571^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10660557 + ... + 10660576.

Almost surely, 2^213211330 is an apocalyptic number.

213211330 is a deficient number, since it is larger than the sum of its proper divisors (170569082).

213211330 is a wasteful number, since it uses less digits than its factorization.

213211330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21321140.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 213211330 is about 14601.7577708987. The cubic root of 213211330 is about 597.4067056708.

Adding to 213211330 its reverse (33112312), we get a palindrome (246323642).

The spelling of 213211330 in words is "two hundred thirteen million, two hundred eleven thousand, three hundred thirty".