1143311369 has 2 divisors, whose sum is σ = 1143311370. Its totient is φ = 1143311368.

The previous prime is 1143311357. The next prime is 1143311413. The reversal of 1143311369 is 9631133411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1143251344 + 60025 = 33812^2 + 245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1143311369 is a prime.

It is a super-2 number, since 2×1143311369² = 2614321772969308322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1143311329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571655684 + 571655685.

It is an arithmetic number, because the mean of its divisors is an integer number (571655685).

Almost surely, 2^1143311369 is an apocalyptic number.

It is an amenable number.

1143311369 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143311369 is an equidigital number, since it uses as much as digits as its factorization.

1143311369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 32.

The square root of 1143311369 is about 33812.8876170019. The cubic root of 1143311369 is about 1045.6544114961.

The spelling of 1143311369 in words is "one billion, one hundred forty-three million, three hundred eleven thousand, three hundred sixty-nine".