2112311992 has 64 divisors (see below), whose sum is σ = 4645368000. Its totient is φ = 900063360.

The previous prime is 2112311963. The next prime is 2112312001. The reversal of 2112311992 is 2991132112.

It is a congruent number.

It is an unprimeable number.

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, 494538 + ... + 498790.

It is an arithmetic number, because the mean of its divisors is an integer number (72583875).

Almost surely, 2^2112311992 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 2112311992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2322684000).

2112311992 is an abundant number, since it is smaller than the sum of its proper divisors (2533056008).

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

2112311992 is a wasteful number, since it uses less digits than its factorization.

2112311992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4461 (or 4443 counting only the distinct ones).

The product of its digits is 1944, while the sum is 31.

The square root of 2112311992 is about 45959.8954742066. The cubic root of 2112311992 is about 1283.0769059742.

The spelling of 2112311992 in words is "two billion, one hundred twelve million, three hundred eleven thousand, nine hundred ninety-two".