1143411131 has 4 divisors (see below), whose sum is σ = 1147662000. Its totient is φ = 1139160264.

The previous prime is 1143411119. The next prime is 1143411163. The reversal of 1143411131 is 1311143411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1143411131 is a prime.

It is a super-2 number, since 2×1143411131² = 2614778028989398322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143411331) 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, 2125031 + ... + 2125568.

It is an arithmetic number, because the mean of its divisors is an integer number (286915500).

Almost surely, 2^1143411131 is an apocalyptic number.

1143411131 is a deficient number, since it is larger than the sum of its proper divisors (4250869).

1143411131 is an equidigital number, since it uses as much as digits as its factorization.

1143411131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4250868.

The product of its digits is 144, while the sum is 20.

The square root of 1143411131 is about 33814.3627915713. The cubic root of 1143411131 is about 1045.6848241916.

Adding to 1143411131 its reverse (1311143411), we get a palindrome (2454554542).

The spelling of 1143411131 in words is "one billion, one hundred forty-three million, four hundred eleven thousand, one hundred thirty-one".