216994315 has 8 divisors (see below), whose sum is σ = 260661888. Its totient is φ = 173416320.

The previous prime is 216994303. The next prime is 216994343. The reversal of 216994315 is 513499612.

216994315 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 216994315 - 2⁷ = 216994187 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16942 + ... + 26851.

It is an arithmetic number, because the mean of its divisors is an integer number (32582736).

Almost surely, 2^216994315 is an apocalyptic number.

216994315 is a deficient number, since it is larger than the sum of its proper divisors (43667573).

216994315 is an equidigital number, since it uses as much as digits as its factorization.

216994315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44789.

The product of its digits is 58320, while the sum is 40.

The square root of 216994315 is about 14730.7268999191. The cubic root of 216994315 is about 600.9192529412.

The spelling of 216994315 in words is "two hundred sixteen million, nine hundred ninety-four thousand, three hundred fifteen".