331212221113313 has 16 divisors (see below), whose sum is σ = 336210089088720. Its totient is φ = 326226865913856.

The previous prime is 331212221113229. The next prime is 331212221113327. The reversal of 331212221113313 is 313311122212133.

It can be written as a sum of positive squares in 8 ways, for example, as 7475975413729 + 323736245699584 = 2734223^2 + 17992672^2 .

It is a cyclic number.

It is not a de Polignac number, because 331212221113313 - 2³² = 331207926146017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331212221113363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 810245531 + ... + 810654207.

It is an arithmetic number, because the mean of its divisors is an integer number (21013130568045).

Almost surely, 2^{331212221113313} is an apocalyptic number.

It is an amenable number.

331212221113313 is a deficient number, since it is larger than the sum of its proper divisors (4997867975407).

331212221113313 is a wasteful number, since it uses less digits than its factorization.

331212221113313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423956.

The product of its digits is 3888, while the sum is 29.

Adding to 331212221113313 its reverse (313311122212133), we get a palindrome (644523343325446).

The spelling of 331212221113313 in words is "three hundred thirty-one trillion, two hundred twelve billion, two hundred twenty-one million, one hundred thirteen thousand, three hundred thirteen".