331212131313 has 16 divisors (see below), whose sum is σ = 504797133696. Its totient is φ = 189229224960.

The previous prime is 331212131291. The next prime is 331212131317. The reversal of 331212131313 is 313131212133.

It is not a de Polignac number, because 331212131313 - 2⁶ = 331212131249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (331212131317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1335106 + ... + 1563627.

It is an arithmetic number, because the mean of its divisors is an integer number (31549820856).

Almost surely, 2^331212131313 is an apocalyptic number.

It is an amenable number.

331212131313 is a deficient number, since it is larger than the sum of its proper divisors (173585002383).

331212131313 is a wasteful number, since it uses less digits than its factorization.

331212131313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2904184.

The product of its digits is 972, while the sum is 24.

Adding to 331212131313 its reverse (313131212133), we get a palindrome (644343343446).

The spelling of 331212131313 in words is "three hundred thirty-one billion, two hundred twelve million, one hundred thirty-one thousand, three hundred thirteen".