211331230 has 32 divisors (see below), whose sum is σ = 415702368. Its totient is φ = 76713600.

The previous prime is 211331227. The next prime is 211331249. The reversal of 211331230 is 32133112.

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 15 ways as a sum of consecutive naturals, for example, 79320 + ... + 81940.

It is an arithmetic number, because the mean of its divisors is an integer number (12990699).

Almost surely, 2^211331230 is an apocalyptic number.

211331230 is a deficient number, since it is larger than the sum of its proper divisors (204371138).

211331230 is a wasteful number, since it uses less digits than its factorization.

211331230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3372.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 211331230 is about 14537.2359821254. The cubic root of 211331230 is about 595.6455390482.

Adding to 211331230 its reverse (32133112), we get a palindrome (243464342).

The spelling of 211331230 in words is "two hundred eleven million, three hundred thirty-one thousand, two hundred thirty".