1440213431444 has 24 divisors (see below), whose sum is σ = 2537642473800. Its totient is φ = 715174072704.

The previous prime is 1440213431429. The next prime is 1440213431483. The reversal of 1440213431444 is 4441343120441.

It can be written as a sum of positive squares in 4 ways, for example, as 165431044 + 1440048000400 = 12862^2 + 1200020^2 .

It is a super-3 number, since 3×1440213431444³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4205702 + ... + 4535234.

It is an arithmetic number, because the mean of its divisors is an integer number (105735103075).

Almost surely, 2^{1440213431444} is an apocalyptic number.

It is an amenable number.

1440213431444 is a deficient number, since it is larger than the sum of its proper divisors (1097429042356).

1440213431444 is a wasteful number, since it uses less digits than its factorization.

1440213431444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337019 (or 337017 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 35.

Adding to 1440213431444 its reverse (4441343120441), we get a palindrome (5881556551885).

The spelling of 1440213431444 in words is "one trillion, four hundred forty billion, two hundred thirteen million, four hundred thirty-one thousand, four hundred forty-four".