12311143040 has 128 divisors (see below), whose sum is σ = 33711897600. Its totient is φ = 4211417088.

The previous prime is 12311143027. The next prime is 12311143049. The reversal of 12311143040 is 4034111321.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (12311143049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2143052 + ... + 2148788.

It is an arithmetic number, because the mean of its divisors is an integer number (263374200).

Almost surely, 2^12311143040 is an apocalyptic number.

12311143040 is a gapful number since it is divisible by the number (10) 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 12311143040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16855948800).

12311143040 is an abundant number, since it is smaller than the sum of its proper divisors (21400754560).

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

12311143040 is an equidigital number, since it uses as much as digits as its factorization.

12311143040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6242 (or 6230 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12311143040 its reverse (4034111321), we get a palindrome (16345254361).

The spelling of 12311143040 in words is "twelve billion, three hundred eleven million, one hundred forty-three thousand, forty".