71320271 has 8 divisors (see below), whose sum is σ = 77903184. Its totient is φ = 64753920.

The previous prime is 71320237. The next prime is 71320283. The reversal of 71320271 is 17202317.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-71320271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71320231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5951 + ... + 13343.

It is an arithmetic number, because the mean of its divisors is an integer number (9737898).

Almost surely, 2^71320271 is an apocalyptic number.

71320271 is a deficient number, since it is larger than the sum of its proper divisors (6582913).

71320271 is a wasteful number, since it uses less digits than its factorization.

71320271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8281.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 71320271 is about 8445.1329770466. The cubic root of 71320271 is about 414.7034626172.

Adding to 71320271 its reverse (17202317), we get a palindrome (88522588).

The spelling of 71320271 in words is "seventy-one million, three hundred twenty thousand, two hundred seventy-one".