331221033321311 has 8 divisors (see below), whose sum is σ = 386592330685440. Its totient is φ = 277863237679608.

The previous prime is 331221033321293. The next prime is 331221033321331. The reversal of 331221033321311 is 113123330122133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-331221033321311 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 (331221033321331) 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 7 ways as a sum of consecutive naturals, for example, 503375430251 + ... + 503375430908.

It is an arithmetic number, because the mean of its divisors is an integer number (48324041335680).

Almost surely, 2^{331221033321311} is an apocalyptic number.

331221033321311 is a deficient number, since it is larger than the sum of its proper divisors (55371297364129).

331221033321311 is a wasteful number, since it uses less digits than its factorization.

331221033321311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006750861213.

The product of its (nonzero) digits is 5832, while the sum is 29.

Adding to 331221033321311 its reverse (113123330122133), we get a palindrome (444344363443444).

The spelling of 331221033321311 in words is "three hundred thirty-one trillion, two hundred twenty-one billion, thirty-three million, three hundred twenty-one thousand, three hundred eleven".