71123271 has 4 divisors (see below), whose sum is σ = 94831032. Its totient is φ = 47415512.

The previous prime is 71123237. The next prime is 71123279. The reversal of 71123271 is 17232117.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71123271 - 2¹⁴ = 71106887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71123279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11853876 + ... + 11853881.

It is an arithmetic number, because the mean of its divisors is an integer number (23707758).

Almost surely, 2^71123271 is an apocalyptic number.

71123271 is a deficient number, since it is larger than the sum of its proper divisors (23707761).

71123271 is a wasteful number, since it uses less digits than its factorization.

71123271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23707760.

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

The square root of 71123271 is about 8433.4613890146. The cubic root of 71123271 is about 414.3212808659.

Adding to 71123271 its reverse (17232117), we get a palindrome (88355388).

The spelling of 71123271 in words is "seventy-one million, one hundred twenty-three thousand, two hundred seventy-one".