213084387 has 6 divisors (see below), whose sum is σ = 307788572. Its totient is φ = 142056252.

The previous prime is 213084379. The next prime is 213084437. The reversal of 213084387 is 783480312.

213084387 is a `hidden beast` number, since 213 + 0 + 8 + 438 + 7 = 666.

It is not a de Polignac number, because 213084387 - 2³ = 213084379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213084337) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11838013 + ... + 11838030.

Almost surely, 2^213084387 is an apocalyptic number.

213084387 is a deficient number, since it is larger than the sum of its proper divisors (94704185).

213084387 is a wasteful number, since it uses less digits than its factorization.

213084387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23676049 (or 23676046 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 213084387 is about 14597.4102840196. The cubic root of 213084387 is about 597.2881196415.

The spelling of 213084387 in words is "two hundred thirteen million, eighty-four thousand, three hundred eighty-seven".