2231284 has 48 divisors (see below), whose sum is σ = 4777920. Its totient is φ = 898560.

The previous prime is 2231279. The next prime is 2231293. The reversal of 2231284 is 4821322.

It is a super-3 number, since 3×2231284³ = 33326200927276542912, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a d-powerful number, because it can be written as 2¹¹ + 2¹⁷ + 3⁵ + 1 + 2²¹ + 8³ + 4⁴ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14134 + ... + 14290.

It is an arithmetic number, because the mean of its divisors is an integer number (99540).

2^2231284 is an apocalyptic number.

It is an amenable number.

2231284 is an abundant number, since it is smaller than the sum of its proper divisors (2546636).

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

2231284 is a wasteful number, since it uses less digits than its factorization.

2231284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208 (or 206 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 2231284 is about 1493.7483054384. The cubic root of 2231284 is about 130.6727257822.

The spelling of 2231284 in words is "two million, two hundred thirty-one thousand, two hundred eighty-four".