1143330361 has 4 divisors (see below), whose sum is σ = 1148323300. Its totient is φ = 1138337424.

The previous prime is 1143330343. The next prime is 1143330371. The reversal of 1143330361 is 1630333411.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 470239225 + 673091136 = 21685^2 + 25944^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143330361 - 2¹⁹ = 1142806073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143330371) 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, 2496126 + ... + 2496583.

It is an arithmetic number, because the mean of its divisors is an integer number (287080825).

Almost surely, 2^1143330361 is an apocalyptic number.

It is an amenable number.

1143330361 is a deficient number, since it is larger than the sum of its proper divisors (4992939).

1143330361 is an equidigital number, since it uses as much as digits as its factorization.

1143330361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4992938.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 1143330361 is about 33813.1684554997. The cubic root of 1143330361 is about 1045.6602013912.

Adding to 1143330361 its reverse (1630333411), we get a palindrome (2773663772).

The spelling of 1143330361 in words is "one billion, one hundred forty-three million, three hundred thirty thousand, three hundred sixty-one".