1440023105323 has 16 divisors (see below), whose sum is σ = 1594469372544. Its totient is φ = 1289501516160.

The previous prime is 1440023105317. The next prime is 1440023105371. The reversal of 1440023105323 is 3235013200441.

It is a happy number.

It is not a de Polignac number, because 1440023105323 - 2⁵ = 1440023105291 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1440023105291 and 1440023105300.

It is not an unprimeable number, because it can be changed into a prime (1440023105303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16839811 + ... + 16925107.

It is an arithmetic number, because the mean of its divisors is an integer number (99654335784).

Almost surely, 2^{1440023105323} is an apocalyptic number.

1440023105323 is a deficient number, since it is larger than the sum of its proper divisors (154446267221).

1440023105323 is a wasteful number, since it uses less digits than its factorization.

1440023105323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108282.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 1440023105323 its reverse (3235013200441), we get a palindrome (4675036305764).

The spelling of 1440023105323 in words is "one trillion, four hundred forty billion, twenty-three million, one hundred five thousand, three hundred twenty-three".