216316375 has 16 divisors (see below), whose sum is σ = 294506784. Its totient is φ = 157320000.

The previous prime is 216316367. The next prime is 216316391. The reversal of 216316375 is 573613612.

It is not a de Polignac number, because 216316375 - 2³ = 216316367 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 216316375.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77286 + ... + 80035.

It is an arithmetic number, because the mean of its divisors is an integer number (18406674).

Almost surely, 2^216316375 is an apocalyptic number.

216316375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

216316375 is a deficient number, since it is larger than the sum of its proper divisors (78190409).

216316375 is a wasteful number, since it uses less digits than its factorization.

216316375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157347 (or 157337 counting only the distinct ones).

The product of its digits is 22680, while the sum is 34.

The square root of 216316375 is about 14707.6978144100. The cubic root of 216316375 is about 600.2927969082.

Adding to 216316375 its reverse (573613612), we get a palindrome (789929987).

The spelling of 216316375 in words is "two hundred sixteen million, three hundred sixteen thousand, three hundred seventy-five".