1323120003203 has 4 divisors (see below), whose sum is σ = 1380646959888. Its totient is φ = 1265593046520.

The previous prime is 1323120003181. The next prime is 1323120003217. The reversal of 1323120003203 is 3023000213231.

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 1323120003203 - 2⁸ = 1323120002947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323120003103) 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, 28763478308 + ... + 28763478353.

It is an arithmetic number, because the mean of its divisors is an integer number (345161739972).

Almost surely, 2^{1323120003203} is an apocalyptic number.

1323120003203 is a deficient number, since it is larger than the sum of its proper divisors (57526956685).

1323120003203 is an equidigital number, since it uses as much as digits as its factorization.

1323120003203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57526956684.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 1323120003203 its reverse (3023000213231), we get a palindrome (4346120216434).

The spelling of 1323120003203 in words is "one trillion, three hundred twenty-three billion, one hundred twenty million, three thousand, two hundred three".