217083383 has 4 divisors (see below), whose sum is σ = 236818248. Its totient is φ = 197348520.

The previous prime is 217083331. The next prime is 217083409. The reversal of 217083383 is 383380712.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 217083383 - 2²⁴ = 200306167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217083313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9867416 + ... + 9867437.

It is an arithmetic number, because the mean of its divisors is an integer number (59204562).

Almost surely, 2^217083383 is an apocalyptic number.

217083383 is a deficient number, since it is larger than the sum of its proper divisors (19734865).

217083383 is a wasteful number, since it uses less digits than its factorization.

217083383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19734864.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 217083383 is about 14733.7497942649. The cubic root of 217083383 is about 601.0014599407.

The spelling of 217083383 in words is "two hundred seventeen million, eighty-three thousand, three hundred eighty-three".