1143279113 has 2 divisors, whose sum is σ = 1143279114. Its totient is φ = 1143279112.

The previous prime is 1143279097. The next prime is 1143279127. The reversal of 1143279113 is 3119723411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1065891904 + 77387209 = 32648^2 + 8797^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143279113 - 2⁴ = 1143279097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1143279113.

It is not a weakly prime, because it can be changed into another prime (1143279143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571639556 + 571639557.

It is an arithmetic number, because the mean of its divisors is an integer number (571639557).

Almost surely, 2^1143279113 is an apocalyptic number.

It is an amenable number.

1143279113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143279113 is an equidigital number, since it uses as much as digits as its factorization.

1143279113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 32.

The square root of 1143279113 is about 33812.4106357414. The cubic root of 1143279113 is about 1045.6445777953.

The spelling of 1143279113 in words is "one billion, one hundred forty-three million, two hundred seventy-nine thousand, one hundred thirteen".