1303003321313 has 4 divisors (see below), whose sum is σ = 1303287638208. Its totient is φ = 1302719004420.

The previous prime is 1303003321289. The next prime is 1303003321379. The reversal of 1303003321313 is 3131233003031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1303003321313 - 2²² = 1302999127009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1303003321513) 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, 142151573 + ... + 142160738.

It is an arithmetic number, because the mean of its divisors is an integer number (325821909552).

Almost surely, 2^{1303003321313} is an apocalyptic number.

It is an amenable number.

1303003321313 is a deficient number, since it is larger than the sum of its proper divisors (284316895).

1303003321313 is an equidigital number, since it uses as much as digits as its factorization.

1303003321313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284316894.

The product of its (nonzero) digits is 1458, while the sum is 23.

Adding to 1303003321313 its reverse (3131233003031), we get a palindrome (4434236324344).

The spelling of 1303003321313 in words is "one trillion, three hundred three billion, three million, three hundred twenty-one thousand, three hundred thirteen".