211109983 has 16 divisors (see below), whose sum is σ = 246988800. Its totient is φ = 180366648.

The previous prime is 211109981. The next prime is 211109989. The reversal of 211109983 is 389901112.

211109983 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211109983 - 2¹ = 211109981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211109981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130566 + ... + 132172.

It is an arithmetic number, because the mean of its divisors is an integer number (15436800).

Almost surely, 2^211109983 is an apocalyptic number.

211109983 is a deficient number, since it is larger than the sum of its proper divisors (35878817).

211109983 is an equidigital number, since it uses as much as digits as its factorization.

211109983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011 (or 1997 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 211109983 is about 14529.6243241180. The cubic root of 211109983 is about 595.4376019554.

The spelling of 211109983 in words is "two hundred eleven million, one hundred nine thousand, nine hundred eighty-three".