1271312 has 20 divisors (see below), whose sum is σ = 2815296. Its totient is φ = 544800.

The previous prime is 1271299. The next prime is 1271317. The reversal of 1271312 is 2131721.

It is not an unprimeable number, because it can be changed into a prime (1271317) 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, 5564 + ... + 5787.

2^1271312 is an apocalyptic number.

It is an amenable number.

1271312 is an abundant number, since it is smaller than the sum of its proper divisors (1543984).

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

1271312 is a wasteful number, since it uses less digits than its factorization.

1271312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11366 (or 11360 counting only the distinct ones).

The product of its digits is 84, while the sum is 17.

The square root of 1271312 is about 1127.5247225671. The cubic root of 1271312 is about 108.3304919702.

The spelling of 1271312 in words is "one million, two hundred seventy-one thousand, three hundred twelve".