1147171271 has 8 divisors (see below), whose sum is σ = 1215016704. Its totient is φ = 1079366400.

The previous prime is 1147171247. The next prime is 1147171283. The reversal of 1147171271 is 1721717411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1147171271 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 (1147174271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63386 + ... + 79448.

It is an arithmetic number, because the mean of its divisors is an integer number (151877088).

Almost surely, 2^1147171271 is an apocalyptic number.

1147171271 is a deficient number, since it is larger than the sum of its proper divisors (67845433).

1147171271 is a wasteful number, since it uses less digits than its factorization.

1147171271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20281.

The product of its digits is 2744, while the sum is 32.

The square root of 1147171271 is about 33869.9169027620. The cubic root of 1147171271 is about 1046.8298247392.

Adding to 1147171271 its reverse (1721717411), we get a palindrome (2868888682).

The spelling of 1147171271 in words is "one billion, one hundred forty-seven million, one hundred seventy-one thousand, two hundred seventy-one".