211103140 has 12 divisors (see below), whose sum is σ = 443316636. Its totient is φ = 84441248.

The previous prime is 211103119. The next prime is 211103159. The reversal of 211103140 is 41301112.

It can be written as a sum of positive squares in 2 ways, for example, as 156550144 + 54552996 = 12512^2 + 7386^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 211103140.

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 3 ways as a sum of consecutive naturals, for example, 5277559 + ... + 5277598.

It is an arithmetic number, because the mean of its divisors is an integer number (36943053).

Almost surely, 2^211103140 is an apocalyptic number.

211103140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211103140 is an abundant number, since it is smaller than the sum of its proper divisors (232213496).

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

211103140 is a wasteful number, since it uses less digits than its factorization.

211103140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10555166 (or 10555164 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 211103140 is about 14529.3888378004. The cubic root of 211103140 is about 595.4311683049.

Adding to 211103140 its reverse (41301112), we get a palindrome (252404252).

The spelling of 211103140 in words is "two hundred eleven million, one hundred three thousand, one hundred forty".