2231684 has 24 divisors (see below), whose sum is σ = 4807488. Its totient is φ = 882720.

The previous prime is 2231681. The next prime is 2231687. The reversal of 2231684 is 4861322.

2231684 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2231681) and next prime (2231687).

It is a super-3 number, since 3×2231684³ = 33344127202356664512, which contains 333 as substring.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

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

It is a d-powerful number, because it can be written as 2⁵ + 2¹⁷ + 3⁷ + 1 + 6³ + 8⁷ + 4⁵ .

It is not an unprimeable number, because it can be changed into a prime (2231681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2702 + ... + 3429.

It is an arithmetic number, because the mean of its divisors is an integer number (200312).

2^2231684 is an apocalyptic number.

It is an amenable number.

2231684 is an abundant number, since it is smaller than the sum of its proper divisors (2575804).

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

2231684 is a wasteful number, since it uses less digits than its factorization.

2231684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6155 (or 6153 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The square root of 2231684 is about 1493.8821908035. The cubic root of 2231684 is about 130.6805338376.

The spelling of 2231684 in words is "two million, two hundred thirty-one thousand, six hundred eighty-four".