217323383 has 2 divisors, whose sum is σ = 217323384. Its totient is φ = 217323382.

The previous prime is 217323371. The next prime is 217323401. The reversal of 217323383 is 383323712.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 217323383 - 2¹⁰ = 217322359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (217323583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108661691 + 108661692.

It is an arithmetic number, because the mean of its divisors is an integer number (108661692).

Almost surely, 2^217323383 is an apocalyptic number.

217323383 is a deficient number, since it is larger than the sum of its proper divisors (1).

217323383 is an equidigital number, since it uses as much as digits as its factorization.

217323383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 32.

The square root of 217323383 is about 14741.8921105806. The cubic root of 217323383 is about 601.2228606229. Note that the first 3 decimals are identical.

The spelling of 217323383 in words is "two hundred seventeen million, three hundred twenty-three thousand, three hundred eighty-three".