217003223 has 2 divisors, whose sum is σ = 217003224. Its totient is φ = 217003222.

The previous prime is 217003211. The next prime is 217003243. The reversal of 217003223 is 322300712.

It is an a-pointer prime, because the next prime (217003243) can be obtained adding 217003223 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 217003223 - 2⁶ = 217003159 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 217003195 and 217003204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (217003243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108501611 + 108501612.

It is an arithmetic number, because the mean of its divisors is an integer number (108501612).

Almost surely, 2^217003223 is an apocalyptic number.

217003223 is a deficient number, since it is larger than the sum of its proper divisors (1).

217003223 is an equidigital number, since it uses as much as digits as its factorization.

217003223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 217003223 is about 14731.0292579982. The cubic root of 217003223 is about 600.9274757610.

Adding to 217003223 its reverse (322300712), we get a palindrome (539303935).

The spelling of 217003223 in words is "two hundred seventeen million, three thousand, two hundred twenty-three".