217234195 has 16 divisors (see below), whose sum is σ = 278655552. Its totient is φ = 162173440.

The previous prime is 217234189. The next prime is 217234217. The reversal of 217234195 is 591432712.

It is a happy number.

It is not a de Polignac number, because 217234195 - 2⁹ = 217233683 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 217234195.

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, 18322 + ... + 27751.

It is an arithmetic number, because the mean of its divisors is an integer number (17415972).

Almost surely, 2^217234195 is an apocalyptic number.

217234195 is a deficient number, since it is larger than the sum of its proper divisors (61421357).

217234195 is a wasteful number, since it uses less digits than its factorization.

217234195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46142.

The product of its digits is 15120, while the sum is 34.

The square root of 217234195 is about 14738.8668153288. The cubic root of 217234195 is about 601.1406034803.

The spelling of 217234195 in words is "two hundred seventeen million, two hundred thirty-four thousand, one hundred ninety-five".