211330234 has 8 divisors (see below), whose sum is σ = 317062260. Its totient is φ = 105642816.

The previous prime is 211330211. The next prime is 211330267. The reversal of 211330234 is 432033112.

It can be written as a sum of positive squares in 2 ways, for example, as 211266225 + 64009 = 14535^2 + 253^2 .

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

It is a super-3 number, since 3×211330234³ (a number of 26 digits) contains 333 as substring.

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, 5922 + ... + 21394.

Almost surely, 2^211330234 is an apocalyptic number.

211330234 is a deficient number, since it is larger than the sum of its proper divisors (105732026).

211330234 is a wasteful number, since it uses less digits than its factorization.

211330234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22304.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 211330234 is about 14537.2017252290. The cubic root of 211330234 is about 595.6446032914.

Adding to 211330234 its reverse (432033112), we get a palindrome (643363346).

The spelling of 211330234 in words is "two hundred eleven million, three hundred thirty thousand, two hundred thirty-four".