102313217 has 2 divisors, whose sum is σ = 102313218. Its totient is φ = 102313216.

The previous prime is 102313199. The next prime is 102313229. The reversal of 102313217 is 712313201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52765696 + 49547521 = 7264^2 + 7039^2 .

It is an emirp because it is prime and its reverse (712313201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102313217 - 2⁸ = 102312961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (102313117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51156608 + 51156609.

It is an arithmetic number, because the mean of its divisors is an integer number (51156609).

Almost surely, 2^102313217 is an apocalyptic number.

It is an amenable number.

102313217 is a deficient number, since it is larger than the sum of its proper divisors (1).

102313217 is an equidigital number, since it uses as much as digits as its factorization.

102313217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 102313217 is about 10114.9996045477. Note that the first 3 decimals coincide. The cubic root of 102313217 is about 467.7106366817.

Adding to 102313217 its reverse (712313201), we get a palindrome (814626418).

The spelling of 102313217 in words is "one hundred two million, three hundred thirteen thousand, two hundred seventeen".