217032093 has 6 divisors (see below), whose sum is σ = 313490814. Its totient is φ = 144688056.

The previous prime is 217032089. The next prime is 217032113. The reversal of 217032093 is 390230712.

It can be written as a sum of positive squares in only one way, i.e., 213802884 + 3229209 = 14622^2 + 1797^2 .

It is not a de Polignac number, because 217032093 - 2² = 217032089 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217032043) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12057330 + ... + 12057347.

It is an arithmetic number, because the mean of its divisors is an integer number (52248469).

Almost surely, 2^217032093 is an apocalyptic number.

It is an amenable number.

217032093 is a deficient number, since it is larger than the sum of its proper divisors (96458721).

217032093 is a wasteful number, since it uses less digits than its factorization.

217032093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24114683 (or 24114680 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 217032093 is about 14732.0091297827. The cubic root of 217032093 is about 600.9541236093.

The spelling of 217032093 in words is "two hundred seventeen million, thirty-two thousand, ninety-three".