213730585 has 8 divisors (see below), whose sum is σ = 264750336. Its totient is φ = 165468720.

The previous prime is 213730571. The next prime is 213730589. The reversal of 213730585 is 585037312.

213730585 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 213730585 - 2²⁷ = 79512857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213730585.

It is not an unprimeable number, because it can be changed into a prime (213730589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 689299 + ... + 689608.

It is an arithmetic number, because the mean of its divisors is an integer number (33093792).

Almost surely, 2^213730585 is an apocalyptic number.

It is an amenable number.

213730585 is a deficient number, since it is larger than the sum of its proper divisors (51019751).

213730585 is a wasteful number, since it uses less digits than its factorization.

213730585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378943.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 213730585 is about 14619.5275231452. The cubic root of 213730585 is about 597.8912873821.

Adding to 213730585 its reverse (585037312), we get a palindrome (798767897).

The spelling of 213730585 in words is "two hundred thirteen million, seven hundred thirty thousand, five hundred eighty-five".