321203340213013 has 4 divisors (see below), whose sum is σ = 321218411005228. Its totient is φ = 321188269420800.

The previous prime is 321203340212971. The next prime is 321203340213017. The reversal of 321203340213013 is 310312043302123.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 101739055750084 + 219464284462929 = 10086578^2 + 14814327^2 .

It is a cyclic number.

It is not a de Polignac number, because 321203340213013 - 2¹⁷ = 321203340081941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321203340213017) 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, 7535364138 + ... + 7535406763.

It is an arithmetic number, because the mean of its divisors is an integer number (80304602751307).

Almost surely, 2^{321203340213013} is an apocalyptic number.

It is an amenable number.

321203340213013 is a deficient number, since it is larger than the sum of its proper divisors (15070792215).

321203340213013 is a wasteful number, since it uses less digits than its factorization.

321203340213013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15070792214.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 321203340213013 its reverse (310312043302123), we get a palindrome (631515383515136).

The spelling of 321203340213013 in words is "three hundred twenty-one trillion, two hundred three billion, three hundred forty million, two hundred thirteen thousand, thirteen".