3112121312 has 24 divisors (see below), whose sum is σ = 6338266200. Its totient is φ = 1502402944.

The previous prime is 3112121293. The next prime is 3112121317. The reversal of 3112121312 is 2131212113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3112121317) 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 3 ways as a sum of consecutive naturals, for example, 1675862 + ... + 1677717.

It is an arithmetic number, because the mean of its divisors is an integer number (264094425).

Almost surely, 2^3112121312 is an apocalyptic number.

3112121312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3112121312 is an abundant number, since it is smaller than the sum of its proper divisors (3226144888).

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

3112121312 is a wasteful number, since it uses less digits than its factorization.

3112121312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3353618 (or 3353610 counting only the distinct ones).

The product of its digits is 72, while the sum is 17.

The square root of 3112121312 is about 55786.3900248080. The cubic root of 3112121312 is about 1459.9977031302.

Adding to 3112121312 its reverse (2131212113), we get a palindrome (5243333425).

The spelling of 3112121312 in words is "three billion, one hundred twelve million, one hundred twenty-one thousand, three hundred twelve".