2011023144 has 48 divisors (see below), whose sum is σ = 5865486900. Its totient is φ = 618776064.

The previous prime is 2011023107. The next prime is 2011023167. The reversal of 2011023144 is 4413201102.

It can be written as a sum of positive squares in 2 ways, for example, as 1957000644 + 54022500 = 44238^2 + 7350^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1073329 + ... + 1075200.

Almost surely, 2^2011023144 is an apocalyptic number.

2011023144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2011023144 is an abundant number, since it is smaller than the sum of its proper divisors (3854463756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2011023144 is a wasteful number, since it uses less digits than its factorization.

2011023144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2148554 (or 2148547 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2011023144 is about 44844.4326979392. The cubic root of 2011023144 is about 1262.2315254890.

Adding to 2011023144 its reverse (4413201102), we get a palindrome (6424224246).

The spelling of 2011023144 in words is "two billion, eleven million, twenty-three thousand, one hundred forty-four".