1163271 has 12 divisors (see below), whose sum is σ = 1623608. Its totient is φ = 740784.

The previous prime is 1163263. The next prime is 1163273. The reversal of 1163271 is 1723611.

It is not a de Polignac number, because 1163271 - 2³ = 1163263 is a prime.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1221 + ... + 1953.

2^1163271 is an apocalyptic number.

1163271 is a deficient number, since it is larger than the sum of its proper divisors (460337).

1163271 is an equidigital number, since it uses as much as digits as its factorization.

1163271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782 (or 759 counting only the distinct ones).

The product of its digits is 252, while the sum is 21.

The square root of 1163271 is about 1078.5504160678. The cubic root of 1163271 is about 105.1704261784.

Adding to 1163271 its reverse (1723611), we get a palindrome (2886882).

The spelling of 1163271 in words is "one million, one hundred sixty-three thousand, two hundred seventy-one".