1143246271 has 4 divisors (see below), whose sum is σ = 1143315000. Its totient is φ = 1143177544.

The previous prime is 1143246197. The next prime is 1143246287. The reversal of 1143246271 is 1726423411.

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.

It is a cyclic number.

It is not a de Polignac number, because 1143246271 - 2²⁷ = 1009028543 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 (1143216271) 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, 7980 + ... + 48478.

It is an arithmetic number, because the mean of its divisors is an integer number (285828750).

Almost surely, 2^1143246271 is an apocalyptic number.

1143246271 is a deficient number, since it is larger than the sum of its proper divisors (68729).

1143246271 is an equidigital number, since it uses as much as digits as its factorization.

1143246271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68728.

The product of its digits is 8064, while the sum is 31.

The square root of 1143246271 is about 33811.9249821716. The cubic root of 1143246271 is about 1045.6345652540.

Adding to 1143246271 its reverse (1726423411), we get a palindrome (2869669682).

The spelling of 1143246271 in words is "one billion, one hundred forty-three million, two hundred forty-six thousand, two hundred seventy-one".