1143243313 has 8 divisors (see below), whose sum is σ = 1193291136. Its totient is φ = 1093224000.

The previous prime is 1143243301. The next prime is 1143243317. The reversal of 1143243313 is 3133423411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1143243313 - 2¹⁷ = 1143112241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143243317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137433 + ... + 145513.

It is an arithmetic number, because the mean of its divisors is an integer number (149161392).

Almost surely, 2^1143243313 is an apocalyptic number.

It is an amenable number.

1143243313 is a deficient number, since it is larger than the sum of its proper divisors (50047823).

1143243313 is an equidigital number, since it uses as much as digits as its factorization.

1143243313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14255.

The product of its digits is 2592, while the sum is 25.

The square root of 1143243313 is about 33811.8812401795. The cubic root of 1143243313 is about 1045.6336634390.

Adding to 1143243313 its reverse (3133423411), we get a palindrome (4276666724).

It can be divided in two parts, 11432 and 43313, that added together give a palindrome (54745).

The spelling of 1143243313 in words is "one billion, one hundred forty-three million, two hundred forty-three thousand, three hundred thirteen".