14431313440 has 96 divisors (see below), whose sum is σ = 35248034304. Its totient is φ = 5577707520.

The previous prime is 14431313431. The next prime is 14431313441. The reversal of 14431313440 is 4431313441.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 14431313399 and 14431313408.

It is not an unprimeable number, because it can be changed into a prime (14431313441) 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, 3901672 + ... + 3905368.

It is an arithmetic number, because the mean of its divisors is an integer number (367167024).

Almost surely, 2^14431313440 is an apocalyptic number.

14431313440 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 14431313440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17624017152).

14431313440 is an abundant number, since it is smaller than the sum of its proper divisors (20816720864).

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

14431313440 is a wasteful number, since it uses less digits than its factorization.

14431313440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4530 (or 4522 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 14431313440 its reverse (4431313441), we get a palindrome (18862626881).

Subtracting from 14431313440 its reverse (4431313441), we obtain a palindrome (9999999999).

The spelling of 14431313440 in words is "fourteen billion, four hundred thirty-one million, three hundred thirteen thousand, four hundred forty".