211331133 has 16 divisors (see below), whose sum is σ = 337167040. Its totient is φ = 130049712.

The previous prime is 211331117. The next prime is 211331143. The reversal of 211331133 is 331133112.

It is a happy number.

It is not a de Polignac number, because 211331133 - 2⁴ = 211331117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211331143) 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 15 ways as a sum of consecutive naturals, for example, 300691 + ... + 301392.

It is an arithmetic number, because the mean of its divisors is an integer number (21072940).

Almost surely, 2^211331133 is an apocalyptic number.

It is an amenable number.

211331133 is a deficient number, since it is larger than the sum of its proper divisors (125835907).

211331133 is a wasteful number, since it uses less digits than its factorization.

211331133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602105 (or 602099 counting only the distinct ones).

The product of its digits is 162, while the sum is 18.

The square root of 211331133 is about 14537.2326458649. The cubic root of 211331133 is about 595.6454479154.

Adding to 211331133 its reverse (331133112), we get a palindrome (542464245).

The spelling of 211331133 in words is "two hundred eleven million, three hundred thirty-one thousand, one hundred thirty-three".