211041987 has 16 divisors (see below), whose sum is σ = 318984960. Its totient is φ = 123036192.

The previous prime is 211041977. The next prime is 211042001. The reversal of 211041987 is 789140112.

211041987 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 211041987 - 2⁶ = 211041923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211041907) 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, 141663 + ... + 143144.

It is an arithmetic number, because the mean of its divisors is an integer number (19936560).

Almost surely, 2^211041987 is an apocalyptic number.

211041987 is a deficient number, since it is larger than the sum of its proper divisors (107942973).

211041987 is a wasteful number, since it uses less digits than its factorization.

211041987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284842.

The product of its (nonzero) digits is 4032, while the sum is 33.

The square root of 211041987 is about 14527.2842265855. The cubic root of 211041987 is about 595.3736673146.

The spelling of 211041987 in words is "two hundred eleven million, forty-one thousand, nine hundred eighty-seven".