871312563 has 12 divisors (see below), whose sum is σ = 1372977528. Its totient is φ = 528068160.

The previous prime is 871312553. The next prime is 871312573. The reversal of 871312563 is 365213178.

871312563 is a `hidden beast` number, since 87 + 1 + 3 + 12 + 563 = 666.

It is an interprime number because it is at equal distance from previous prime (871312553) and next prime (871312573).

It is not a de Polignac number, because 871312563 - 2⁸ = 871312307 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (871312553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4400470 + ... + 4400667.

It is an arithmetic number, because the mean of its divisors is an integer number (114414794).

Almost surely, 2^871312563 is an apocalyptic number.

871312563 is a deficient number, since it is larger than the sum of its proper divisors (501664965).

871312563 is a wasteful number, since it uses less digits than its factorization.

871312563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8801154 (or 8801151 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 871312563 is about 29518.0040483770. The cubic root of 871312563 is about 955.1201161015.

The spelling of 871312563 in words is "eight hundred seventy-one million, three hundred twelve thousand, five hundred sixty-three".