2011144 has 8 divisors (see below), whose sum is σ = 3770910. Its totient is φ = 1005568.

The previous prime is 2011129. The next prime is 2011147. The reversal of 2011144 is 4411102.

It can be written as a sum of positive squares in only one way, i.e., 1790244 + 220900 = 1338^2 + 470^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2011147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125689 + ... + 125704.

2^2011144 is an apocalyptic number.

It is an amenable number.

2011144 is a deficient number, since it is larger than the sum of its proper divisors (1759766).

2011144 is a wasteful number, since it uses less digits than its factorization.

2011144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251399 (or 251395 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2011144 is about 1418.1480881770. The cubic root of 2011144 is about 126.2256810329.

Adding to 2011144 its reverse (4411102), we get a palindrome (6422246).

The spelling of 2011144 in words is "two million, eleven thousand, one hundred forty-four".