211830484 has 6 divisors (see below), whose sum is σ = 370703354. Its totient is φ = 105915240.

The previous prime is 211830481. The next prime is 211830499. The reversal of 211830484 is 484038112.

It can be written as a sum of positive squares in only one way, i.e., 150552900 + 61277584 = 12270^2 + 7828^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211830481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26478807 + ... + 26478814.

Almost surely, 2^211830484 is an apocalyptic number.

It is an amenable number.

211830484 is a deficient number, since it is larger than the sum of its proper divisors (158872870).

211830484 is a wasteful number, since it uses less digits than its factorization.

211830484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52957625 (or 52957623 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 211830484 is about 14554.3974110919. The cubic root of 211830484 is about 596.1142259634.

Adding to 211830484 its reverse (484038112), we get a palindrome (695868596).

The spelling of 211830484 in words is "two hundred eleven million, eight hundred thirty thousand, four hundred eighty-four".