1143314321 has 4 divisors (see below), whose sum is σ = 1143596544. Its totient is φ = 1143032100.

The previous prime is 1143314309. The next prime is 1143314323. The reversal of 1143314321 is 1234133411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1143314321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143314323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134945 + ... + 143166.

It is an arithmetic number, because the mean of its divisors is an integer number (285899136).

Almost surely, 2^1143314321 is an apocalyptic number.

It is an amenable number.

1143314321 is a deficient number, since it is larger than the sum of its proper divisors (282223).

1143314321 is an equidigital number, since it uses as much as digits as its factorization.

1143314321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282222.

The product of its digits is 864, while the sum is 23.

The square root of 1143314321 is about 33812.9312689687. The cubic root of 1143314321 is about 1045.6553114461.

Adding to 1143314321 its reverse (1234133411), we get a palindrome (2377447732).

The spelling of 1143314321 in words is "one billion, one hundred forty-three million, three hundred fourteen thousand, three hundred twenty-one".