213581885 has 8 divisors (see below), whose sum is σ = 279598176. Its totient is φ = 155332240.

The previous prime is 213581873. The next prime is 213581899. The reversal of 213581885 is 588185312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213581885 - 2¹² = 213577789 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1941599 + ... + 1941708.

It is an arithmetic number, because the mean of its divisors is an integer number (34949772).

Almost surely, 2^213581885 is an apocalyptic number.

It is an amenable number.

213581885 is a deficient number, since it is larger than the sum of its proper divisors (66016291).

213581885 is a wasteful number, since it uses less digits than its factorization.

213581885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3883323.

The product of its digits is 76800, while the sum is 41.

The square root of 213581885 is about 14614.4409745977. The cubic root of 213581885 is about 597.7525971071.

The spelling of 213581885 in words is "two hundred thirteen million, five hundred eighty-one thousand, eight hundred eighty-five".