331202320021013 has 12 divisors (see below), whose sum is σ = 398561553299340. Its totient is φ = 274098471740352.

The previous prime is 331202320020991. The next prime is 331202320021019. The reversal of 331202320021013 is 310120023202133.

It can be written as a sum of positive squares in 2 ways, for example, as 97274074268644 + 233928245752369 = 9862762^2 + 15294713^2 .

It is not a de Polignac number, because 331202320021013 - 2⁸ = 331202320020757 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 331202320021013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331202320021019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116538464456 + ... + 116538467297.

It is an arithmetic number, because the mean of its divisors is an integer number (33213462774945).

Almost surely, 2^{331202320021013} is an apocalyptic number.

It is an amenable number.

331202320021013 is a deficient number, since it is larger than the sum of its proper divisors (67359233278327).

331202320021013 is a wasteful number, since it uses less digits than its factorization.

331202320021013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233076931796 (or 233076931789 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 331202320021013 its reverse (310120023202133), we get a palindrome (641322343223146).

The spelling of 331202320021013 in words is "three hundred thirty-one trillion, two hundred two billion, three hundred twenty million, twenty-one thousand, thirteen".