1320221031323 has 8 divisors (see below), whose sum is σ = 1338838880256. Its totient is φ = 1301603826600.

The previous prime is 1320221031313. The next prime is 1320221031343. The reversal of 1320221031323 is 3231301220231.

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 1320221031323 - 2²⁶ = 1320153922459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320221031313) 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 7 ways as a sum of consecutive naturals, for example, 5229440 + ... + 5476082.

It is an arithmetic number, because the mean of its divisors is an integer number (167354860032).

Almost surely, 2^{1320221031323} is an apocalyptic number.

1320221031323 is a deficient number, since it is larger than the sum of its proper divisors (18617848933).

1320221031323 is an equidigital number, since it uses as much as digits as its factorization.

1320221031323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322105.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 1320221031323 its reverse (3231301220231), we get a palindrome (4551522251554).

The spelling of 1320221031323 in words is "one trillion, three hundred twenty billion, two hundred twenty-one million, thirty-one thousand, three hundred twenty-three".