2231444 has 6 divisors (see below), whose sum is σ = 3905034. Its totient is φ = 1115720.

The previous prime is 2231431. The next prime is 2231447. The reversal of 2231444 is 4441322.

2231444 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1488400 + 743044 = 1220^2 + 862^2 .

It is a super-3 number, since 3×2231444³ = 33333370666112329152, which contains 333 as substring.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹⁷ + 2²¹ + 3⁷ + 1 + 4 + 4 + 4⁵ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231447) 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 as a sum of consecutive naturals, namely, 278927 + ... + 278934.

It is an arithmetic number, because the mean of its divisors is an integer number (650839).

2^2231444 is an apocalyptic number.

It is an amenable number.

2231444 is a deficient number, since it is larger than the sum of its proper divisors (1673590).

2231444 is a wasteful number, since it uses less digits than its factorization.

2231444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557865 (or 557863 counting only the distinct ones).

The product of its digits is 768, while the sum is 20.

The square root of 2231444 is about 1493.8018610244. The cubic root of 2231444 is about 130.6758491164.

Adding to 2231444 its reverse (4441322), we get a palindrome (6672766).

The spelling of 2231444 in words is "two million, two hundred thirty-one thousand, four hundred forty-four".