2231285 has 16 divisors (see below), whose sum is σ = 3144576. Its totient is φ = 1487808.

The previous prime is 2231279. The next prime is 2231293. The reversal of 2231285 is 5821322.

2231285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2231285 - 2⁴ = 2231269 is a prime.

It is a super-3 number, since 3×2231285³ = 33326245734951222375, which contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2231285.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 434 + ... + 2156.

It is an arithmetic number, because the mean of its divisors is an integer number (196536).

2^2231285 is an apocalyptic number.

It is an amenable number.

2231285 is a deficient number, since it is larger than the sum of its proper divisors (913291).

2231285 is a wasteful number, since it uses less digits than its factorization.

2231285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772.

The product of its digits is 960, while the sum is 23.

The square root of 2231285 is about 1493.7486401667. The cubic root of 2231285 is about 130.6727453035.

The spelling of 2231285 in words is "two million, two hundred thirty-one thousand, two hundred eighty-five".