2311431440232 has 128 divisors (see below), whose sum is σ = 6172657920000. Its totient is φ = 719203795200.

The previous prime is 2311431440183. The next prime is 2311431440237. The reversal of 2311431440232 is 2320441341132.

It is a self number, because there is not a number n which added to its sum of digits gives 2311431440232.

It is not an unprimeable number, because it can be changed into a prime (2311431440237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9222982 + ... + 9470282.

It is an arithmetic number, because the mean of its divisors is an integer number (48223890000).

Almost surely, 2^{2311431440232} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2311431440232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3086328960000).

2311431440232 is an abundant number, since it is smaller than the sum of its proper divisors (3861226479768).

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

2311431440232 is a wasteful number, since it uses less digits than its factorization.

2311431440232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247631 (or 247627 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 2311431440232 its reverse (2320441341132), we get a palindrome (4631872781364).

The spelling of 2311431440232 in words is "two trillion, three hundred eleven billion, four hundred thirty-one million, four hundred forty thousand, two hundred thirty-two".