321303413203 has 4 divisors (see below), whose sum is σ = 327365741808. Its totient is φ = 315241084600.

The previous prime is 321303413173. The next prime is 321303413231. The reversal of 321303413203 is 302314303123.

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 321303413203 - 2²⁵ = 321269858771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321303413273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3031164223 + ... + 3031164328.

It is an arithmetic number, because the mean of its divisors is an integer number (81841435452).

Almost surely, 2^321303413203 is an apocalyptic number.

321303413203 is a deficient number, since it is larger than the sum of its proper divisors (6062328605).

321303413203 is an equidigital number, since it uses as much as digits as its factorization.

321303413203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6062328604.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 321303413203 its reverse (302314303123), we get a palindrome (623617716326).

The spelling of 321303413203 in words is "three hundred twenty-one billion, three hundred three million, four hundred thirteen thousand, two hundred three".