1143331393 has 2 divisors, whose sum is σ = 1143331394. Its totient is φ = 1143331392.

The previous prime is 1143331373. The next prime is 1143331439. The reversal of 1143331393 is 3931333411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 964226704 + 179104689 = 31052^2 + 13383^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1143331393 is a prime.

It is not a weakly prime, because it can be changed into another prime (1143331303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571665696 + 571665697.

It is an arithmetic number, because the mean of its divisors is an integer number (571665697).

Almost surely, 2^1143331393 is an apocalyptic number.

It is an amenable number.

1143331393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143331393 is an equidigital number, since it uses as much as digits as its factorization.

1143331393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8748, while the sum is 31.

The square root of 1143331393 is about 33813.1837158230. The cubic root of 1143331393 is about 1045.6605160046.

The spelling of 1143331393 in words is "one billion, one hundred forty-three million, three hundred thirty-one thousand, three hundred ninety-three".