216316056 has 48 divisors (see below), whose sum is σ = 594430200. Its totient is φ = 65549440.

The previous prime is 216316049. The next prime is 216316063. The reversal of 216316056 is 650613612.

It is an interprime number because it is at equal distance from previous prime (216316049) and next prime (216316063).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 34341 + ... + 40148.

Almost surely, 2^216316056 is an apocalyptic number.

It is an amenable number.

216316056 is an abundant number, since it is smaller than the sum of its proper divisors (378114144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216316056 is a wasteful number, since it uses less digits than its factorization.

216316056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74520 (or 74505 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 216316056 is about 14707.6869697448. The cubic root of 216316056 is about 600.2925018257.

Adding to 216316056 its reverse (650613612), we get a palindrome (866929668).

The spelling of 216316056 in words is "two hundred sixteen million, three hundred sixteen thousand, fifty-six".