216301 has 4 divisors (see below), whose sum is σ = 217792. Its totient is φ = 214812.

The previous prime is 216289. The next prime is 216317. The reversal of 216301 is 103612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 216301 - 2⁷ = 216173 is a prime.

It is a super-2 number, since 2×216301² = 93572245202, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 501 + ... + 826.

It is an arithmetic number, because the mean of its divisors is an integer number (54448).

2²¹⁶³⁰¹ is an apocalyptic number.

It is an amenable number.

216301 is a deficient number, since it is larger than the sum of its proper divisors (1491).

216301 is a wasteful number, since it uses less digits than its factorization.

216301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 216301 is about 465.0817132505. The cubic root of 216301 is about 60.0278574344.

Adding to 216301 its reverse (103612), we get a palindrome (319913).

The spelling of 216301 in words is "two hundred sixteen thousand, three hundred one".