1313320504303 has 4 divisors (see below), whose sum is σ = 1313328911328. Its totient is φ = 1313312097280.

The previous prime is 1313320504273. The next prime is 1313320504369. The reversal of 1313320504303 is 3034050233131.

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

It is a cyclic number.

It is not a de Polignac number, because 1313320504303 - 2³³ = 1304730569711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313320504603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3964663 + ... + 4283128.

It is an arithmetic number, because the mean of its divisors is an integer number (328332227832).

Almost surely, 2^{1313320504303} is an apocalyptic number.

1313320504303 is a deficient number, since it is larger than the sum of its proper divisors (8407025).

1313320504303 is an equidigital number, since it uses as much as digits as its factorization.

1313320504303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8407024.

The product of its (nonzero) digits is 9720, while the sum is 28.

Adding to 1313320504303 its reverse (3034050233131), we get a palindrome (4347370737434).

The spelling of 1313320504303 in words is "one trillion, three hundred thirteen billion, three hundred twenty million, five hundred four thousand, three hundred three".