1316233660513 has 4 divisors (see below), whose sum is σ = 1316318742468. Its totient is φ = 1316148578560.

The previous prime is 1316233660493. The next prime is 1316233660519. The reversal of 1316233660513 is 3150663326131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1059516131584 + 256717528929 = 1029328^2 + 506673^2 .

It is a cyclic number.

It is not a de Polignac number, because 1316233660513 - 2²⁹ = 1315696789601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1316233660519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42517768 + ... + 42548713.

It is an arithmetic number, because the mean of its divisors is an integer number (329079685617).

Almost surely, 2^{1316233660513} is an apocalyptic number.

It is an amenable number.

1316233660513 is a deficient number, since it is larger than the sum of its proper divisors (85081955).

1316233660513 is an equidigital number, since it uses as much as digits as its factorization.

1316233660513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85081954.

The product of its (nonzero) digits is 174960, while the sum is 40.

Adding to 1316233660513 its reverse (3150663326131), we get a palindrome (4466896986644).

The spelling of 1316233660513 in words is "one trillion, three hundred sixteen billion, two hundred thirty-three million, six hundred sixty thousand, five hundred thirteen".