2316978217 has 2 divisors, whose sum is σ = 2316978218. Its totient is φ = 2316978216.

The previous prime is 2316978187. The next prime is 2316978227. The reversal of 2316978217 is 7128796132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2315919376 + 1058841 = 48124^2 + 1029^2 .

It is a cyclic number.

It is not a de Polignac number, because 2316978217 - 2⁷ = 2316978089 is a prime.

It is not a weakly prime, because it can be changed into another prime (2316978227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1158489108 + 1158489109.

It is an arithmetic number, because the mean of its divisors is an integer number (1158489109).

Almost surely, 2^2316978217 is an apocalyptic number.

It is an amenable number.

2316978217 is a deficient number, since it is larger than the sum of its proper divisors (1).

2316978217 is an equidigital number, since it uses as much as digits as its factorization.

2316978217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 46.

The square root of 2316978217 is about 48134.9999169004. Note that the first 4 decimals coincide. The cubic root of 2316978217 is about 1323.2461840864.

The spelling of 2316978217 in words is "two billion, three hundred sixteen million, nine hundred seventy-eight thousand, two hundred seventeen".