211143230 has 32 divisors (see below), whose sum is σ = 403237440. Its totient is φ = 79326720.

The previous prime is 211143217. The next prime is 211143253. The reversal of 211143230 is 32341112.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 211143199 and 211143208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111431 + ... + 113309.

It is an arithmetic number, because the mean of its divisors is an integer number (12601170).

Almost surely, 2^211143230 is an apocalyptic number.

211143230 is a deficient number, since it is larger than the sum of its proper divisors (192094210).

211143230 is a wasteful number, since it uses less digits than its factorization.

211143230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2564.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 211143230 is about 14530.7683898684. The cubic root of 211143230 is about 595.4688581353.

Adding to 211143230 its reverse (32341112), we get a palindrome (243484342).

The spelling of 211143230 in words is "two hundred eleven million, one hundred forty-three thousand, two hundred thirty".