1311203032289 has 2 divisors, whose sum is σ = 1311203032290. Its totient is φ = 1311203032288.

The previous prime is 1311203032277. The next prime is 1311203032319. The reversal of 1311203032289 is 9822303021131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1300436894689 + 10766137600 = 1140367^2 + 103760^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311203032289 - 2¹² = 1311203028193 is a prime.

It is not a weakly prime, because it can be changed into another prime (1311203032219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655601516144 + 655601516145.

It is an arithmetic number, because the mean of its divisors is an integer number (655601516145).

Almost surely, 2^{1311203032289} is an apocalyptic number.

It is an amenable number.

1311203032289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311203032289 is an equidigital number, since it uses as much as digits as its factorization.

1311203032289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The spelling of 1311203032289 in words is "one trillion, three hundred eleven billion, two hundred three million, thirty-two thousand, two hundred eighty-nine".