216143963 has 8 divisors (see below), whose sum is σ = 251208960. Its totient is φ = 182125800.

The previous prime is 216143957. The next prime is 216143987. The reversal of 216143963 is 369341612.

It is a happy number.

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 216143963 - 2⁴ = 216143947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216143953) by changing a digit.

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, 261263 + ... + 262088.

It is an arithmetic number, because the mean of its divisors is an integer number (31401120).

Almost surely, 2^216143963 is an apocalyptic number.

216143963 is a deficient number, since it is larger than the sum of its proper divisors (35064997).

216143963 is an equidigital number, since it uses as much as digits as its factorization.

216143963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523417.

The product of its digits is 23328, while the sum is 35.

The square root of 216143963 is about 14701.8353616139. The cubic root of 216143963 is about 600.1332694706.

The spelling of 216143963 in words is "two hundred sixteen million, one hundred forty-three thousand, nine hundred sixty-three".