1440431302240 has 96 divisors (see below), whose sum is σ = 3897086909184. Its totient is φ = 492856143360.

The previous prime is 1440431302127. The next prime is 1440431302243. The reversal of 1440431302240 is 422031340441.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 1440431302199 and 1440431302208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440431302243) 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, 759754 + ... + 1859593.

It is an arithmetic number, because the mean of its divisors is an integer number (40594655304).

Almost surely, 2^{1440431302240} is an apocalyptic number.

1440431302240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1440431302240 is an abundant number, since it is smaller than the sum of its proper divisors (2456655606944).

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

1440431302240 is a wasteful number, since it uses less digits than its factorization.

1440431302240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2619860 (or 2619852 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 1440431302240 its reverse (422031340441), we get a palindrome (1862462642681).

The spelling of 1440431302240 in words is "one trillion, four hundred forty billion, four hundred thirty-one million, three hundred two thousand, two hundred forty".