211040308 has 24 divisors (see below), whose sum is σ = 385859880. Its totient is φ = 100867200.

The previous prime is 211040251. The next prime is 211040317. The reversal of 211040308 is 803040112.

It can be written as a sum of positive squares in 4 ways, for example, as 140849424 + 70190884 = 11868^2 + 8378^2 .

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, 2710 + ... + 20722.

It is an arithmetic number, because the mean of its divisors is an integer number (16077495).

Almost surely, 2^211040308 is an apocalyptic number.

It is an amenable number.

211040308 is a deficient number, since it is larger than the sum of its proper divisors (174819572).

211040308 is a wasteful number, since it uses less digits than its factorization.

211040308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18147 (or 18145 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 211040308 is about 14527.2264386565. The cubic root of 211040308 is about 595.3720884265.

The spelling of 211040308 in words is "two hundred eleven million, forty thousand, three hundred eight".