216500316 has 48 divisors (see below), whose sum is σ = 517461504. Its totient is φ = 70430976.

The previous prime is 216500279. The next prime is 216500353. The reversal of 216500316 is 613005612.

216500316 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (216500279) and next prime (216500353).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89661 + ... + 92043.

It is an arithmetic number, because the mean of its divisors is an integer number (10780448).

Almost surely, 2^216500316 is an apocalyptic number.

It is an amenable number.

216500316 is an abundant number, since it is smaller than the sum of its proper divisors (300961188).

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

216500316 is a wasteful number, since it uses less digits than its factorization.

216500316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2570 (or 2568 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 216500316 is about 14713.9497076754. The cubic root of 216500316 is about 600.4628983389.

Adding to 216500316 its reverse (613005612), we get a palindrome (829505928).

The spelling of 216500316 in words is "two hundred sixteen million, five hundred thousand, three hundred sixteen".