216316132 has 6 divisors (see below), whose sum is σ = 378553238. Its totient is φ = 108158064.

The previous prime is 216316103. The next prime is 216316157. The reversal of 216316132 is 231613612.

216316132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 209844196 + 6471936 = 14486^2 + 2544^2 .

It is a junction number, because it is equal to n+sod(n) for n = 216316097 and 216316106.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27039513 + ... + 27039520.

Almost surely, 2^216316132 is an apocalyptic number.

It is an amenable number.

216316132 is a deficient number, since it is larger than the sum of its proper divisors (162237106).

216316132 is a wasteful number, since it uses less digits than its factorization.

216316132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54079037 (or 54079035 counting only the distinct ones).

The product of its digits is 1296, while the sum is 25.

The square root of 216316132 is about 14707.6895534275. The cubic root of 216316132 is about 600.2925721275.

Adding to 216316132 its reverse (231613612), we get a palindrome (447929744).

The spelling of 216316132 in words is "two hundred sixteen million, three hundred sixteen thousand, one hundred thirty-two".