3121130030312 has 128 divisors (see below), whose sum is σ = 7154334720000. Its totient is φ = 1246018526208.

The previous prime is 3121130030303. The next prime is 3121130030339. The reversal of 3121130030312 is 2130300311213.

3121130030312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3121130030312² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 196005983 + ... + 196021905.

It is an arithmetic number, because the mean of its divisors is an integer number (55893240000).

Almost surely, 2^{3121130030312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3121130030312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3577167360000).

3121130030312 is an abundant number, since it is smaller than the sum of its proper divisors (4033204689688).

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

3121130030312 is a wasteful number, since it uses less digits than its factorization.

3121130030312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18055 (or 18051 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 3121130030312 its reverse (2130300311213), we get a palindrome (5251430341525).

The spelling of 3121130030312 in words is "three trillion, one hundred twenty-one billion, one hundred thirty million, thirty thousand, three hundred twelve".