71013871 has 2 divisors, whose sum is σ = 71013872. Its totient is φ = 71013870.

The previous prime is 71013869. The next prime is 71013881. The reversal of 71013871 is 17831017.

It is a weak prime.

It is an emirp because it is prime and its reverse (17831017) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71013871 - 2¹ = 71013869 is a prime.

It is a super-3 number, since 3×71013871³ (a number of 25 digits) contains 333 as substring.

Together with 71013869, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71013881) 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, 35506935 + 35506936.

It is an arithmetic number, because the mean of its divisors is an integer number (35506936).

Almost surely, 2^71013871 is an apocalyptic number.

71013871 is a deficient number, since it is larger than the sum of its proper divisors (1).

71013871 is an equidigital number, since it uses as much as digits as its factorization.

71013871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176, while the sum is 28.

The square root of 71013871 is about 8426.9728253982. The cubic root of 71013871 is about 414.1087390470.

Adding to 71013871 its reverse (17831017), we get a palindrome (88844888).

The spelling of 71013871 in words is "seventy-one million, thirteen thousand, eight hundred seventy-one".