211042312 has 32 divisors (see below), whose sum is σ = 430075800. Its totient is φ = 96505344.

The previous prime is 211042297. The next prime is 211042387. The reversal of 211042312 is 213240112.

It can be written as a sum of positive squares in 4 ways, for example, as 204661636 + 6380676 = 14306^2 + 2526^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2028 + ... + 20644.

Almost surely, 2^211042312 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 211042312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215037900).

211042312 is an abundant number, since it is smaller than the sum of its proper divisors (219033488).

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

211042312 is a wasteful number, since it uses less digits than its factorization.

211042312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18745 (or 18741 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 211042312 is about 14527.2954124297. The cubic root of 211042312 is about 595.3739729352.

Adding to 211042312 its reverse (213240112), we get a palindrome (424282424).

The spelling of 211042312 in words is "two hundred eleven million, forty-two thousand, three hundred twelve".