1271087271 has 12 divisors (see below), whose sum is σ = 1836356080. Its totient is φ = 847234080.

The previous prime is 1271087269. The next prime is 1271087281. The reversal of 1271087271 is 1727801721.

It is not a de Polignac number, because 1271087271 - 2¹ = 1271087269 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 (1271087281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58710 + ... + 77388.

Almost surely, 2^1271087271 is an apocalyptic number.

1271087271 is a deficient number, since it is larger than the sum of its proper divisors (565268809).

1271087271 is a wasteful number, since it uses less digits than its factorization.

1271087271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26246 (or 26243 counting only the distinct ones).

The product of its (nonzero) digits is 10976, while the sum is 36.

The square root of 1271087271 is about 35652.3108788196. The cubic root of 1271087271 is about 1083.2410842370.

Adding to 1271087271 its reverse (1727801721), we get a palindrome (2998888992).

The spelling of 1271087271 in words is "one billion, two hundred seventy-one million, eighty-seven thousand, two hundred seventy-one".