321312113201203 has 4 divisors (see below), whose sum is σ = 326579524893088. Its totient is φ = 316044701509320.

The previous prime is 321312113201147. The next prime is 321312113201227. The reversal of 321312113201203 is 302102311213123.

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 321312113201203 - 2²¹ = 321312111104051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321312113201003) 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, 2633705845851 + ... + 2633705845972.

It is an arithmetic number, because the mean of its divisors is an integer number (81644881223272).

Almost surely, 2^{321312113201203} is an apocalyptic number.

321312113201203 is a deficient number, since it is larger than the sum of its proper divisors (5267411691885).

321312113201203 is an equidigital number, since it uses as much as digits as its factorization.

321312113201203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5267411691884.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 321312113201203 its reverse (302102311213123), we get a palindrome (623414424414326).

The spelling of 321312113201203 in words is "three hundred twenty-one trillion, three hundred twelve billion, one hundred thirteen million, two hundred one thousand, two hundred three".