2231992 has 16 divisors (see below), whose sum is σ = 4782960. Its totient is φ = 956544.

The previous prime is 2231941. The next prime is 2232017. The reversal of 2231992 is 2991322.

2231992 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×2231992³ = 33357934813957630464, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 2231992.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19873 + ... + 19984.

It is an arithmetic number, because the mean of its divisors is an integer number (298935).

2^2231992 is an apocalyptic number.

It is an amenable number.

2231992 is an abundant number, since it is smaller than the sum of its proper divisors (2550968).

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

2231992 is a wasteful number, since it uses less digits than its factorization.

2231992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39870 (or 39866 counting only the distinct ones).

The product of its digits is 1944, while the sum is 28.

The square root of 2231992 is about 1493.9852743585. The cubic root of 2231992 is about 130.6865454045.

It can be divided in two parts, 2231 and 992, that added together give a palindrome (3223).

The spelling of 2231992 in words is "two million, two hundred thirty-one thousand, nine hundred ninety-two".