216345334 has 8 divisors (see below), whose sum is σ = 324639360. Its totient is φ = 108132216.

The previous prime is 216345319. The next prime is 216345361. The reversal of 216345334 is 433543612.

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

It is a junction number, because it is equal to n+sod(n) for n = 216345296 and 216345305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13029 + ... + 24544.

It is an arithmetic number, because the mean of its divisors is an integer number (40579920).

Almost surely, 2^216345334 is an apocalyptic number.

216345334 is a deficient number, since it is larger than the sum of its proper divisors (108294026).

216345334 is a wasteful number, since it uses less digits than its factorization.

216345334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40454.

The product of its digits is 25920, while the sum is 31.

The square root of 216345334 is about 14708.6822659272. The cubic root of 216345334 is about 600.3195834508.

Adding to 216345334 its reverse (433543612), we get a palindrome (649888946).

The spelling of 216345334 in words is "two hundred sixteen million, three hundred forty-five thousand, three hundred thirty-four".