1311033332009 has 2 divisors, whose sum is σ = 1311033332010. Its totient is φ = 1311033332008.

The previous prime is 1311033331981. The next prime is 1311033332033. The reversal of 1311033332009 is 9002333301131.

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., 1038303936784 + 272729395225 = 1018972^2 + 522235^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311033332009 - 2⁸ = 1311033331753 is a prime.

It is not a weakly prime, because it can be changed into another prime (1311033032009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655516666004 + 655516666005.

It is an arithmetic number, because the mean of its divisors is an integer number (655516666005).

Almost surely, 2^{1311033332009} is an apocalyptic number.

It is an amenable number.

1311033332009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311033332009 is an equidigital number, since it uses as much as digits as its factorization.

1311033332009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4374, while the sum is 29.

The spelling of 1311033332009 in words is "one trillion, three hundred eleven billion, thirty-three million, three hundred thirty-two thousand, nine".