2231224 has 8 divisors (see below), whose sum is σ = 4183560. Its totient is φ = 1115608.

The previous prime is 2231219. The next prime is 2231269. The reversal of 2231224 is 4221322.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×2231224³ = 33323512540293622272, which contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2231198 and 2231207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139444 + ... + 139459.

It is an arithmetic number, because the mean of its divisors is an integer number (522945).

2^2231224 is an apocalyptic number.

It is an amenable number.

2231224 is a deficient number, since it is larger than the sum of its proper divisors (1952336).

2231224 is a wasteful number, since it uses less digits than its factorization.

2231224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278909 (or 278905 counting only the distinct ones).

The product of its digits is 192, while the sum is 16.

The square root of 2231224 is about 1493.7282215986. The cubic root of 2231224 is about 130.6715544935.

Adding to 2231224 its reverse (4221322), we get a palindrome (6452546).

The spelling of 2231224 in words is "two million, two hundred thirty-one thousand, two hundred twenty-four".