1320321023303 has 4 divisors (see below), whose sum is σ = 1320407260848. Its totient is φ = 1320234785760.

The previous prime is 1320321023293. The next prime is 1320321023317. The reversal of 1320321023303 is 3033201230231.

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 1320321023303 - 2¹² = 1320321019207 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 (1320321023393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43095803 + ... + 43126428.

It is an arithmetic number, because the mean of its divisors is an integer number (330101815212).

Almost surely, 2^{1320321023303} is an apocalyptic number.

1320321023303 is a deficient number, since it is larger than the sum of its proper divisors (86237545).

1320321023303 is an equidigital number, since it uses as much as digits as its factorization.

1320321023303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86237544.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 1320321023303 its reverse (3033201230231), we get a palindrome (4353522253534).

The spelling of 1320321023303 in words is "one trillion, three hundred twenty billion, three hundred twenty-one million, twenty-three thousand, three hundred three".