71171312 has 10 divisors (see below), whose sum is σ = 137894448. Its totient is φ = 35585648.

The previous prime is 71171297. The next prime is 71171339. The reversal of 71171312 is 21317117.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2224088 + ... + 2224119.

Almost surely, 2^71171312 is an apocalyptic number.

It is an amenable number.

71171312 is a deficient number, since it is larger than the sum of its proper divisors (66723136).

71171312 is a wasteful number, since it uses less digits than its factorization.

71171312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4448215 (or 4448209 counting only the distinct ones).

The product of its digits is 294, while the sum is 23.

The square root of 71171312 is about 8436.3091455920. The cubic root of 71171312 is about 414.4145458339.

Adding to 71171312 its reverse (21317117), we get a palindrome (92488429).

The spelling of 71171312 in words is "seventy-one million, one hundred seventy-one thousand, three hundred twelve".