1147135271 has 4 divisors (see below), whose sum is σ = 1147228632. Its totient is φ = 1147041912.

The previous prime is 1147135243. The next prime is 1147135273. The reversal of 1147135271 is 1725317411.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1725317411 = 12907 ⋅133673.

It is a cyclic number.

It is not a de Polignac number, because 1147135271 - 2²⁶ = 1080026407 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 (1147135273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24845 + ... + 53958.

It is an arithmetic number, because the mean of its divisors is an integer number (286807158).

Almost surely, 2^1147135271 is an apocalyptic number.

1147135271 is a deficient number, since it is larger than the sum of its proper divisors (93361).

1147135271 is an equidigital number, since it uses as much as digits as its factorization.

1147135271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93360.

The product of its digits is 5880, while the sum is 32.

The square root of 1147135271 is about 33869.3854535331. The cubic root of 1147135271 is about 1046.8188742477.

The spelling of 1147135271 in words is "one billion, one hundred forty-seven million, one hundred thirty-five thousand, two hundred seventy-one".