871203687317 has 2 divisors, whose sum is σ = 871203687318. Its totient is φ = 871203687316.

The previous prime is 871203687287. The next prime is 871203687329. The reversal of 871203687317 is 713786302178.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 801966816676 + 69236870641 = 895526^2 + 263129^2 .

It is a cyclic number.

It is not a de Polignac number, because 871203687317 - 2¹² = 871203683221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (871203687377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435601843658 + 435601843659.

It is an arithmetic number, because the mean of its divisors is an integer number (435601843659).

Almost surely, 2^871203687317 is an apocalyptic number.

It is an amenable number.

871203687317 is a deficient number, since it is larger than the sum of its proper divisors (1).

871203687317 is an equidigital number, since it uses as much as digits as its factorization.

871203687317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2370816, while the sum is 53.

The spelling of 871203687317 in words is "eight hundred seventy-one billion, two hundred three million, six hundred eighty-seven thousand, three hundred seventeen".