3111992 has 32 divisors (see below), whose sum is σ = 6562080. Its totient is φ = 1372800.

The previous prime is 3111973. The next prime is 3112007. The reversal of 3111992 is 2991113.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1742 + ... + 3042.

It is an arithmetic number, because the mean of its divisors is an integer number (205065).

Almost surely, 2^3111992 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 3111992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3281040).

3111992 is an abundant number, since it is smaller than the sum of its proper divisors (3450088).

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

3111992 is a wasteful number, since it uses less digits than its factorization.

3111992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343 (or 1339 counting only the distinct ones).

The product of its digits is 486, while the sum is 26.

The square root of 3111992 is about 1764.0838982316. The cubic root of 3111992 is about 145.9977481357.

The spelling of 3111992 in words is "three million, one hundred eleven thousand, nine hundred ninety-two".