2011331240304 has 160 divisors (see below), whose sum is σ = 5381941605120. Its totient is φ = 646774511616.

The previous prime is 2011331240251. The next prime is 2011331240309. The reversal of 2011331240304 is 4030421331102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011331240309) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 110303572 + ... + 110321804.

It is an arithmetic number, because the mean of its divisors is an integer number (33637135032).

Almost surely, 2^{2011331240304} is an apocalyptic number.

2011331240304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2011331240304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2690970802560).

2011331240304 is an abundant number, since it is smaller than the sum of its proper divisors (3370610364816).

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

2011331240304 is a wasteful number, since it uses less digits than its factorization.

2011331240304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18807 (or 18801 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 2011331240304 its reverse (4030421331102), we get a palindrome (6041752571406).

The spelling of 2011331240304 in words is "two trillion, eleven billion, three hundred thirty-one million, two hundred forty thousand, three hundred four".