71271312 has 40 divisors (see below), whose sum is σ = 210421056. Its totient is φ = 20363136.

The previous prime is 71271311. The next prime is 71271313. The reversal of 71271312 is 21317217.

It is an interprime number because it is at equal distance from previous prime (71271311) and next prime (71271313).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (71271311) 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, 105723 + ... + 106394.

Almost surely, 2^71271312 is an apocalyptic number.

It is an amenable number.

71271312 is an abundant number, since it is smaller than the sum of its proper divisors (139149744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71271312 is a wasteful number, since it uses less digits than its factorization.

71271312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212135 (or 212129 counting only the distinct ones).

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

The square root of 71271312 is about 8442.2338276075. The cubic root of 71271312 is about 414.6085475054.

Adding to 71271312 its reverse (21317217), we get a palindrome (92588529).

The spelling of 71271312 in words is "seventy-one million, two hundred seventy-one thousand, three hundred twelve".