211087873 has 2 divisors, whose sum is σ = 211087874. Its totient is φ = 211087872.

The previous prime is 211087871. The next prime is 211087889. The reversal of 211087873 is 378780112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192182769 + 18905104 = 13863^2 + 4348^2 .

It is a cyclic number.

It is not a de Polignac number, because 211087873 - 2¹ = 211087871 is a prime.

Together with 211087871, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (211087871) by changing a digit.

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 as a sum of consecutive naturals, namely, 105543936 + 105543937.

It is an arithmetic number, because the mean of its divisors is an integer number (105543937).

Almost surely, 2^211087873 is an apocalyptic number.

It is an amenable number.

211087873 is a deficient number, since it is larger than the sum of its proper divisors (1).

211087873 is an equidigital number, since it uses as much as digits as its factorization.

211087873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 37.

The square root of 211087873 is about 14528.8634448810. The cubic root of 211087873 is about 595.4168140785.

The spelling of 211087873 in words is "two hundred eleven million, eighty-seven thousand, eight hundred seventy-three".