2131224 has 16 divisors (see below), whose sum is σ = 5328120. Its totient is φ = 710400.

The previous prime is 2131223. The next prime is 2131231. The reversal of 2131224 is 4221312.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44377 + ... + 44424.

2^2131224 is an apocalyptic number.

2131224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2131224 is an abundant number, since it is smaller than the sum of its proper divisors (3196896).

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

2131224 is a wasteful number, since it uses less digits than its factorization.

2131224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88810 (or 88806 counting only the distinct ones).

The product of its digits is 96, while the sum is 15.

The square root of 2131224 is about 1459.8712271978. The cubic root of 2131224 is about 128.6894760616.

Adding to 2131224 its reverse (4221312), we get a palindrome (6352536).

The spelling of 2131224 in words is "two million, one hundred thirty-one thousand, two hundred twenty-four".