216500315 has 8 divisors (see below), whose sum is σ = 259888608. Its totient is φ = 173141440.

The previous prime is 216500279. The next prime is 216500353. The reversal of 216500315 is 513005612.

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

It is not a de Polignac number, because 216500315 - 2⁸ = 216500059 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, 15050 + ... + 25680.

It is an arithmetic number, because the mean of its divisors is an integer number (32486076).

Almost surely, 2^216500315 is an apocalyptic number.

216500315 is a deficient number, since it is larger than the sum of its proper divisors (43388293).

216500315 is a wasteful number, since it uses less digits than its factorization.

216500315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14709.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 216500315 is about 14713.9496736940. The cubic root of 216500315 is about 600.4628974144.

Adding to 216500315 its reverse (513005612), we get a palindrome (729505927).

The spelling of 216500315 in words is "two hundred sixteen million, five hundred thousand, three hundred fifteen".