1311033320977 has 2 divisors, whose sum is σ = 1311033320978. Its totient is φ = 1311033320976.

The previous prime is 1311033320941. The next prime is 1311033321011. The reversal of 1311033320977 is 7790233301131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1059590244496 + 251443076481 = 1029364^2 + 501441^2 .

It is an emirp because it is prime and its reverse (7790233301131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1311033320977 - 2¹¹ = 1311033318929 is a prime.

It is not a weakly prime, because it can be changed into another prime (1311033320677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655516660488 + 655516660489.

It is an arithmetic number, because the mean of its divisors is an integer number (655516660489).

Almost surely, 2^{1311033320977} is an apocalyptic number.

It is an amenable number.

1311033320977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311033320977 is an equidigital number, since it uses as much as digits as its factorization.

1311033320977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 71442, while the sum is 40.

The spelling of 1311033320977 in words is "one trillion, three hundred eleven billion, thirty-three million, three hundred twenty thousand, nine hundred seventy-seven".