1320311233013 has 2 divisors, whose sum is σ = 1320311233014. Its totient is φ = 1320311233012.

The previous prime is 1320311233009. The next prime is 1320311233039. The reversal of 1320311233013 is 3103321130231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1249159404964 + 71151828049 = 1117658^2 + 266743^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320311233013 - 2² = 1320311233009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1320311233013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320311238013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660155616506 + 660155616507.

It is an arithmetic number, because the mean of its divisors is an integer number (660155616507).

Almost surely, 2^{1320311233013} is an apocalyptic number.

It is an amenable number.

1320311233013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320311233013 is an equidigital number, since it uses as much as digits as its factorization.

1320311233013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 1320311233013 its reverse (3103321130231), we get a palindrome (4423632363244).

The spelling of 1320311233013 in words is "one trillion, three hundred twenty billion, three hundred eleven million, two hundred thirty-three thousand, thirteen".