217134412 has 24 divisors (see below), whose sum is σ = 420214032. Its totient is φ = 97344000.

The previous prime is 217134409. The next prime is 217134427. The reversal of 217134412 is 214431712.

217134412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 30589 + ... + 37012.

It is an arithmetic number, because the mean of its divisors is an integer number (17508918).

Almost surely, 2^217134412 is an apocalyptic number.

217134412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

217134412 is a deficient number, since it is larger than the sum of its proper divisors (203079620).

217134412 is a wasteful number, since it uses less digits than its factorization.

217134412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67689 (or 67687 counting only the distinct ones).

The product of its digits is 1344, while the sum is 25.

The square root of 217134412 is about 14735.4813969548. The cubic root of 217134412 is about 601.0485479926.

The spelling of 217134412 in words is "two hundred seventeen million, one hundred thirty-four thousand, four hundred twelve".