216103105 has 8 divisors (see below), whose sum is σ = 259443432. Its totient is φ = 172802688.

The previous prime is 216103103. The next prime is 216103109. The reversal of 216103105 is 501301612.

It can be written as a sum of positive squares in 4 ways, for example, as 8714304 + 207388801 = 2952^2 + 14401^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 216103105 - 2¹ = 216103103 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216103103) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3627 + ... + 21103.

It is an arithmetic number, because the mean of its divisors is an integer number (32430429).

Almost surely, 2^216103105 is an apocalyptic number.

It is an amenable number.

216103105 is a deficient number, since it is larger than the sum of its proper divisors (43340327).

216103105 is a wasteful number, since it uses less digits than its factorization.

216103105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19955.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 216103105 is about 14700.4457415413. The cubic root of 216103105 is about 600.0954524065.

Adding to 216103105 its reverse (501301612), we get a palindrome (717404717).

The spelling of 216103105 in words is "two hundred sixteen million, one hundred three thousand, one hundred five".