211130347 has 4 divisors (see below), whose sum is σ = 211818376. Its totient is φ = 210442320.

The previous prime is 211130287. The next prime is 211130371. The reversal of 211130347 is 743031112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211130347 - 2¹¹ = 211128299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211130047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343554 + ... + 344167.

It is an arithmetic number, because the mean of its divisors is an integer number (52954594).

Almost surely, 2^211130347 is an apocalyptic number.

211130347 is a deficient number, since it is larger than the sum of its proper divisors (688029).

211130347 is an equidigital number, since it uses as much as digits as its factorization.

211130347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688028.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 211130347 is about 14530.3250823923. The cubic root of 211130347 is about 595.4567469548.

Adding to 211130347 its reverse (743031112), we get a palindrome (954161459).

The spelling of 211130347 in words is "two hundred eleven million, one hundred thirty thousand, three hundred forty-seven".