331201212312 has 128 divisors (see below), whose sum is σ = 842415275520. Its totient is φ = 108501120000.

The previous prime is 331201212283. The next prime is 331201212317. The reversal of 331201212312 is 213212102133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331201212317) 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 31 ways as a sum of consecutive naturals, for example, 138402988 + ... + 138405380.

It is an arithmetic number, because the mean of its divisors is an integer number (6581369340).

Almost surely, 2^331201212312 is an apocalyptic number.

It is an amenable number.

331201212312 is an abundant number, since it is smaller than the sum of its proper divisors (511214063208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

331201212312 is a wasteful number, since it uses less digits than its factorization.

331201212312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2945 (or 2941 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 331201212312 its reverse (213212102133), we get a palindrome (544413314445).

The spelling of 331201212312 in words is "three hundred thirty-one billion, two hundred one million, two hundred twelve thousand, three hundred twelve".