1311142589 has 2 divisors, whose sum is σ = 1311142590. Its totient is φ = 1311142588.

The previous prime is 1311142537. The next prime is 1311142603. The reversal of 1311142589 is 9852411131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1286441689 + 24700900 = 35867^2 + 4970^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311142589 - 2⁸ = 1311142333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311142529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655571294 + 655571295.

It is an arithmetic number, because the mean of its divisors is an integer number (655571295).

Almost surely, 2^1311142589 is an apocalyptic number.

It is an amenable number.

1311142589 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311142589 is an equidigital number, since it uses as much as digits as its factorization.

1311142589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 35.

The square root of 1311142589 is about 36209.7029675749. The cubic root of 1311142589 is about 1094.5022066836.

The spelling of 1311142589 in words is "one billion, three hundred eleven million, one hundred forty-two thousand, five hundred eighty-nine".