211343056 has 20 divisors (see below), whose sum is σ = 409981572. Its totient is φ = 105541376.

The previous prime is 211343051. The next prime is 211343071. The reversal of 211343056 is 650343112.

It can be written as a sum of positive squares in 2 ways, for example, as 189998656 + 21344400 = 13784^2 + 4620^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 211343056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211343051) 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 3 ways as a sum of consecutive naturals, for example, 6006 + ... + 21418.

Almost surely, 2^211343056 is an apocalyptic number.

It is an amenable number.

211343056 is a deficient number, since it is larger than the sum of its proper divisors (198638516).

211343056 is a wasteful number, since it uses less digits than its factorization.

211343056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16278 (or 16272 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 211343056 is about 14537.6427250088. The cubic root of 211343056 is about 595.6566495259.

Adding to 211343056 its reverse (650343112), we get a palindrome (861686168).

The spelling of 211343056 in words is "two hundred eleven million, three hundred forty-three thousand, fifty-six".