216301385 has 8 divisors (see below), whose sum is σ = 259640640. Its totient is φ = 172988464.

The previous prime is 216301373. The next prime is 216301399. The reversal of 216301385 is 583103612.

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

It is a cyclic number.

It is not a de Polignac number, because 216301385 - 2⁴ = 216301369 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28394 + ... + 35196.

It is an arithmetic number, because the mean of its divisors is an integer number (32455080).

Almost surely, 2^216301385 is an apocalyptic number.

It is an amenable number.

216301385 is a deficient number, since it is larger than the sum of its proper divisors (43339255).

216301385 is an equidigital number, since it uses as much as digits as its factorization.

216301385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13167.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 216301385 is about 14707.1882084918. The cubic root of 216301385 is about 600.2789304947.

Adding to 216301385 its reverse (583103612), we get a palindrome (799404997).

The spelling of 216301385 in words is "two hundred sixteen million, three hundred one thousand, three hundred eighty-five".