217130230 has 8 divisors (see below), whose sum is σ = 390834432. Its totient is φ = 86852088.

The previous prime is 217130209. The next prime is 217130257. The reversal of 217130230 is 32031712.

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

It is a junction number, because it is equal to n+sod(n) for n = 217130198 and 217130207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10856502 + ... + 10856521.

It is an arithmetic number, because the mean of its divisors is an integer number (48854304).

Almost surely, 2^217130230 is an apocalyptic number.

217130230 is a deficient number, since it is larger than the sum of its proper divisors (173704202).

217130230 is a wasteful number, since it uses less digits than its factorization.

217130230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21713030.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 217130230 is about 14735.3394938834. The cubic root of 217130230 is about 601.0446892442.

Adding to 217130230 its reverse (32031712), we get a palindrome (249161942).

The spelling of 217130230 in words is "two hundred seventeen million, one hundred thirty thousand, two hundred thirty".