1143271 has 4 divisors (see below), whose sum is σ = 1146600. Its totient is φ = 1139944.

The previous prime is 1143269. The next prime is 1143281. The reversal of 1143271 is 1723411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1723411 = 863 ⋅1997.

It is a cyclic number.

It is not a de Polignac number, because 1143271 - 2¹ = 1143269 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 (1143281) 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, 1081 + ... + 1858.

It is an arithmetic number, because the mean of its divisors is an integer number (286650).

2^1143271 is an apocalyptic number.

1143271 is a deficient number, since it is larger than the sum of its proper divisors (3329).

1143271 is an equidigital number, since it uses as much as digits as its factorization.

1143271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3328.

The product of its digits is 168, while the sum is 19.

The square root of 1143271 is about 1069.2385140837. The cubic root of 1143271 is about 104.5642104403.

Adding to 1143271 its reverse (1723411), we get a palindrome (2866682).

The spelling of 1143271 in words is "one million, one hundred forty-three thousand, two hundred seventy-one".