263130066317 has 2 divisors, whose sum is σ = 263130066318. Its totient is φ = 263130066316.

The previous prime is 263130066313. The next prime is 263130066343. The reversal of 263130066317 is 713660031362.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 254788714756 + 8341351561 = 504766^2 + 91331^2 .

It is a cyclic number.

It is not a de Polignac number, because 263130066317 - 2² = 263130066313 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263130066313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131565033158 + 131565033159.

It is an arithmetic number, because the mean of its divisors is an integer number (131565033159).

Almost surely, 2^263130066317 is an apocalyptic number.

It is an amenable number.

263130066317 is a deficient number, since it is larger than the sum of its proper divisors (1).

263130066317 is an equidigital number, since it uses as much as digits as its factorization.

263130066317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 38.

Adding to 263130066317 its reverse (713660031362), we get a palindrome (976790097679).

The spelling of 263130066317 in words is "two hundred sixty-three billion, one hundred thirty million, sixty-six thousand, three hundred seventeen".