1443140323423 has 4 divisors (see below), whose sum is σ = 1444556556360. Its totient is φ = 1441724090488.

The previous prime is 1443140323411. The next prime is 1443140323447. The reversal of 1443140323423 is 3243230413441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1443140323423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1443140323483) 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 3 ways as a sum of consecutive naturals, for example, 708114940 + ... + 708116977.

It is an arithmetic number, because the mean of its divisors is an integer number (361139139090).

Almost surely, 2^{1443140323423} is an apocalyptic number.

1443140323423 is a deficient number, since it is larger than the sum of its proper divisors (1416232937).

1443140323423 is a wasteful number, since it uses less digits than its factorization.

1443140323423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416232936.

The product of its (nonzero) digits is 82944, while the sum is 34.

Adding to 1443140323423 its reverse (3243230413441), we get a palindrome (4686370736864).

The spelling of 1443140323423 in words is "one trillion, four hundred forty-three billion, one hundred forty million, three hundred twenty-three thousand, four hundred twenty-three".