216434383 has 8 divisors (see below), whose sum is σ = 238764240. Its totient is φ = 194546880.

The previous prime is 216434371. The next prime is 216434459. The reversal of 216434383 is 383434612.

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

It is not a de Polignac number, because 216434383 - 2²⁵ = 182879951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216434333) 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, 109560 + ... + 111517.

It is an arithmetic number, because the mean of its divisors is an integer number (29845530).

Almost surely, 2^216434383 is an apocalyptic number.

216434383 is a deficient number, since it is larger than the sum of its proper divisors (22329857).

216434383 is a wasteful number, since it uses less digits than its factorization.

216434383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221177.

The product of its digits is 41472, while the sum is 34.

The square root of 216434383 is about 14711.7090441593. The cubic root of 216434383 is about 600.4019371655.

Adding to 216434383 its reverse (383434612), we get a palindrome (599868995).

The spelling of 216434383 in words is "two hundred sixteen million, four hundred thirty-four thousand, three hundred eighty-three".