71143271 has 2 divisors, whose sum is σ = 71143272. Its totient is φ = 71143270.

The previous prime is 71143253. The next prime is 71143273. The reversal of 71143271 is 17234117.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71143271 - 2¹⁸ = 70881127 is a prime.

It is a super-2 number, since 2×71143271² = 10122730017158882, which contains 22 as substring.

Together with 71143273, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71143271.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71143273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35571635 + 35571636.

It is an arithmetic number, because the mean of its divisors is an integer number (35571636).

Almost surely, 2^71143271 is an apocalyptic number.

71143271 is a deficient number, since it is larger than the sum of its proper divisors (1).

71143271 is an equidigital number, since it uses as much as digits as its factorization.

71143271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1176, while the sum is 26.

The square root of 71143271 is about 8434.6470584133. The cubic root of 71143271 is about 414.3601132054.

Adding to 71143271 its reverse (17234117), we get a palindrome (88377388).

The spelling of 71143271 in words is "seventy-one million, one hundred forty-three thousand, two hundred seventy-one".