211872087 has 12 divisors (see below), whose sum is σ = 349757200. Its totient is φ = 121069728.

The previous prime is 211872083. The next prime is 211872103. The reversal of 211872087 is 780278112.

It is a happy number.

211872087 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 211872087 - 2² = 211872083 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 (211872083) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1681462 + ... + 1681587.

Almost surely, 2^211872087 is an apocalyptic number.

211872087 is a deficient number, since it is larger than the sum of its proper divisors (137885113).

211872087 is a wasteful number, since it uses less digits than its factorization.

211872087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3363062 (or 3363059 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 36.

The square root of 211872087 is about 14555.8265653311. The cubic root of 211872087 is about 596.1532485446.

The spelling of 211872087 in words is "two hundred eleven million, eight hundred seventy-two thousand, eighty-seven".