1321313320313 has 8 divisors (see below), whose sum is σ = 1575727686528. Its totient is φ = 1083312784224.

The previous prime is 1321313320291. The next prime is 1321313320321. The reversal of 1321313320313 is 3130233131231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1321313320313 - 2¹⁴ = 1321313303929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321313320363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4103457356 + ... + 4103457677.

It is an arithmetic number, because the mean of its divisors is an integer number (196965960816).

Almost surely, 2^{1321313320313} is an apocalyptic number.

It is an amenable number.

1321313320313 is a deficient number, since it is larger than the sum of its proper divisors (254414366215).

1321313320313 is an equidigital number, since it uses as much as digits as its factorization.

1321313320313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8206915063.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 1321313320313 its reverse (3130233131231), we get a palindrome (4451546451544).

The spelling of 1321313320313 in words is "one trillion, three hundred twenty-one billion, three hundred thirteen million, three hundred twenty thousand, three hundred thirteen".