1331144 has 8 divisors (see below), whose sum is σ = 2495910. Its totient is φ = 665568.

The previous prime is 1331123. The next prime is 1331153. The reversal of 1331144 is 4411331.

It can be written as a sum of positive squares in only one way, i.e., 1295044 + 36100 = 1138^2 + 190^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83189 + ... + 83204.

2^1331144 is an apocalyptic number.

It is an amenable number.

1331144 is a deficient number, since it is larger than the sum of its proper divisors (1164766).

1331144 is a wasteful number, since it uses less digits than its factorization.

1331144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166399 (or 166395 counting only the distinct ones).

The product of its digits is 144, while the sum is 17.

The square root of 1331144 is about 1153.7521397597. The cubic root of 1331144 is about 110.0039667991.

Subtracting from 1331144 its product of digits (144), we obtain a cube (1331000 = 110³).

Adding to 1331144 its reverse (4411331), we get a palindrome (5742475).

The spelling of 1331144 in words is "one million, three hundred thirty-one thousand, one hundred forty-four".