1323321540443 has 8 divisors (see below), whose sum is σ = 1553242271712. Its totient is φ = 1103619508416.

The previous prime is 1323321540421. The next prime is 1323321540487. The reversal of 1323321540443 is 3440451233231.

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 1323321540443 - 2⁸ = 1323321540187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323321542443) 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, 2554674530 + ... + 2554675047.

It is an arithmetic number, because the mean of its divisors is an integer number (194155283964).

Almost surely, 2^{1323321540443} is an apocalyptic number.

1323321540443 is a deficient number, since it is larger than the sum of its proper divisors (229920731269).

1323321540443 is an equidigital number, since it uses as much as digits as its factorization.

1323321540443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5109349621.

The product of its (nonzero) digits is 103680, while the sum is 35.

Adding to 1323321540443 its reverse (3440451233231), we get a palindrome (4763772773674).

The spelling of 1323321540443 in words is "one trillion, three hundred twenty-three billion, three hundred twenty-one million, five hundred forty thousand, four hundred forty-three".