1311630400013 has 2 divisors, whose sum is σ = 1311630400014. Its totient is φ = 1311630400012.

The previous prime is 1311630400009. The next prime is 1311630400063. The reversal of 1311630400013 is 3100040361131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1042722815044 + 268907584969 = 1021138^2 + 518563^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311630400013 - 2² = 1311630400009 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311630400063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655815200006 + 655815200007.

It is an arithmetic number, because the mean of its divisors is an integer number (655815200007).

Almost surely, 2^{1311630400013} is an apocalyptic number.

It is an amenable number.

1311630400013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311630400013 is an equidigital number, since it uses as much as digits as its factorization.

1311630400013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1311630400013 its reverse (3100040361131), we get a palindrome (4411670761144).

The spelling of 1311630400013 in words is "one trillion, three hundred eleven billion, six hundred thirty million, four hundred thousand, thirteen".