2231424 has 96 divisors (see below), whose sum is σ = 6961500. Its totient is φ = 681984.

The previous prime is 2231423. The next prime is 2231429. The reversal of 2231424 is 4241322.

It can be written as a sum of positive squares in 2 ways, for example, as 1871424 + 360000 = 1368^2 + 600^2 .

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-3 number, since 3×2231424³ = 33332474392526979072, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 2231397 and 2231406.

It is not an unprimeable number, because it can be changed into a prime (2231423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14902 + ... + 15050.

2^2231424 is an apocalyptic number.

2231424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2231424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3480750).

2231424 is an abundant number, since it is smaller than the sum of its proper divisors (4730076).

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

2231424 is a wasteful number, since it uses less digits than its factorization.

2231424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 167 counting only the distinct ones).

The product of its digits is 384, while the sum is 18.

The square root of 2231424 is about 1493.7951666812. The cubic root of 2231424 is about 130.6754587078.

Adding to 2231424 its reverse (4241322), we get a palindrome (6472746).

The spelling of 2231424 in words is "two million, two hundred thirty-one thousand, four hundred twenty-four".