11231144 has 8 divisors (see below), whose sum is σ = 21058410. Its totient is φ = 5615568.

The previous prime is 11231141. The next prime is 11231159. The reversal of 11231144 is 44113211.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10824100 + 407044 = 3290^2 + 638^2 .

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

It is a super-2 number, since 2×11231144² = 252277191097472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11231141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701939 + ... + 701954.

Almost surely, 2^11231144 is an apocalyptic number.

It is an amenable number.

11231144 is a deficient number, since it is larger than the sum of its proper divisors (9827266).

11231144 is a wasteful number, since it uses less digits than its factorization.

11231144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403899 (or 1403895 counting only the distinct ones).

The product of its digits is 96, while the sum is 17.

The square root of 11231144 is about 3351.2899009187. The cubic root of 11231144 is about 223.9449801093.

Adding to 11231144 its reverse (44113211), we get a palindrome (55344355).

The spelling of 11231144 in words is "eleven million, two hundred thirty-one thousand, one hundred forty-four".