1143313447 has 2 divisors, whose sum is σ = 1143313448. Its totient is φ = 1143313446.

The previous prime is 1143313433. The next prime is 1143313453. The reversal of 1143313447 is 7443133411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1143313447 - 2⁷ = 1143313319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1143313477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571656723 + 571656724.

It is an arithmetic number, because the mean of its divisors is an integer number (571656724).

Almost surely, 2^1143313447 is an apocalyptic number.

1143313447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143313447 is an equidigital number, since it uses as much as digits as its factorization.

1143313447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 31.

The square root of 1143313447 is about 33812.9183449166. The cubic root of 1143313447 is about 1045.6550449977.

Adding to 1143313447 its reverse (7443133411), we get a palindrome (8586446858).

The spelling of 1143313447 in words is "one billion, one hundred forty-three million, three hundred thirteen thousand, four hundred forty-seven".