211333230 has 48 divisors (see below), whose sum is σ = 550643184. Its totient is φ = 56234880.

The previous prime is 211333211. The next prime is 211333277. The reversal of 211333230 is 32333112.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 44637 + ... + 49143.

It is an arithmetic number, because the mean of its divisors is an integer number (11471733).

Almost surely, 2^211333230 is an apocalyptic number.

211333230 is an abundant number, since it is smaller than the sum of its proper divisors (339309954).

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

211333230 is a wasteful number, since it uses less digits than its factorization.

211333230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5041 (or 5038 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 211333230 is about 14537.3047708301. The cubic root of 211333230 is about 595.6474180690.

Adding to 211333230 its reverse (32333112), we get a palindrome (243666342).

The spelling of 211333230 in words is "two hundred eleven million, three hundred thirty-three thousand, two hundred thirty".