211533312 has 80 divisors (see below), whose sum is σ = 596760912. Its totient is φ = 66355200.

The previous prime is 211533307. The next prime is 211533313. The reversal of 211533312 is 213335112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211533313) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 22062 + ... + 30162.

Almost surely, 2^211533312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211533312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298380456).

211533312 is an abundant number, since it is smaller than the sum of its proper divisors (385227600).

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

211533312 is an equidigital number, since it uses as much as digits as its factorization.

211533312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8139 (or 8123 counting only the distinct ones).

The product of its digits is 540, while the sum is 21.

The square root of 211533312 is about 14544.1848173076. The cubic root of 211533312 is about 595.8353373018.

Adding to 211533312 its reverse (213335112), we get a palindrome (424868424).

The spelling of 211533312 in words is "two hundred eleven million, five hundred thirty-three thousand, three hundred twelve".