71231271 has 8 divisors (see below), whose sum is σ = 95954544. Its totient is φ = 46997760.

The previous prime is 71231267. The next prime is 71231287. The reversal of 71231271 is 17213217.

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

It is not a de Polignac number, because 71231271 - 2² = 71231267 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71231201) 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, 122100 + ... + 122681.

It is an arithmetic number, because the mean of its divisors is an integer number (11994318).

Almost surely, 2^71231271 is an apocalyptic number.

71231271 is a deficient number, since it is larger than the sum of its proper divisors (24723273).

71231271 is a wasteful number, since it uses less digits than its factorization.

71231271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244881.

The product of its digits is 588, while the sum is 24.

The square root of 71231271 is about 8439.8620249386. The cubic root of 71231271 is about 414.5308890933.

Adding to 71231271 its reverse (17213217), we get a palindrome (88444488).

The spelling of 71231271 in words is "seventy-one million, two hundred thirty-one thousand, two hundred seventy-one".