211830470 has 16 divisors (see below), whose sum is σ = 390162960. Its totient is φ = 82761504.

The previous prime is 211830467. The next prime is 211830481. The reversal of 211830470 is 74038112.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 245885 + ... + 246744.

It is an arithmetic number, because the mean of its divisors is an integer number (24385185).

Almost surely, 2^211830470 is an apocalyptic number.

211830470 is a deficient number, since it is larger than the sum of its proper divisors (178332490).

211830470 is a wasteful number, since it uses less digits than its factorization.

211830470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492679.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 211830470 is about 14554.3969301376. The cubic root of 211830470 is about 596.1142128309.

Adding to 211830470 its reverse (74038112), we get a palindrome (285868582).

The spelling of 211830470 in words is "two hundred eleven million, eight hundred thirty thousand, four hundred seventy".