782130317 has 2 divisors, whose sum is σ = 782130318. Its totient is φ = 782130316.

The previous prime is 782130313. The next prime is 782130359. The reversal of 782130317 is 713031287.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 757020196 + 25110121 = 27514^2 + 5011^2 .

It is a cyclic number.

It is not a de Polignac number, because 782130317 - 2² = 782130313 is a prime.

It is a super-2 number, since 2×782130317² = 1223455665541040978, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (782130313) 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, 391065158 + 391065159.

It is an arithmetic number, because the mean of its divisors is an integer number (391065159).

Almost surely, 2^782130317 is an apocalyptic number.

It is an amenable number.

782130317 is a deficient number, since it is larger than the sum of its proper divisors (1).

782130317 is an equidigital number, since it uses as much as digits as its factorization.

782130317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 782130317 is about 27966.5928743564. The cubic root of 782130317 is about 921.3536771346.

The spelling of 782130317 in words is "seven hundred eighty-two million, one hundred thirty thousand, three hundred seventeen".