213081085 has 16 divisors (see below), whose sum is σ = 304932096. Its totient is φ = 139759488.

The previous prime is 213081079. The next prime is 213081097. The reversal of 213081085 is 580180312.

It is a cyclic number.

It is not a de Polignac number, because 213081085 - 2⁷ = 213080957 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 (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131544 + ... + 133153.

It is an arithmetic number, because the mean of its divisors is an integer number (19058256).

Almost surely, 2^213081085 is an apocalyptic number.

It is an amenable number.

213081085 is a deficient number, since it is larger than the sum of its proper divisors (91851011).

213081085 is a wasteful number, since it uses less digits than its factorization.

213081085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264732.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 213081085 is about 14597.2971813278. The cubic root of 213081085 is about 597.2850343919.

The spelling of 213081085 in words is "two hundred thirteen million, eighty-one thousand, eighty-five".