1243313444323 has 2 divisors, whose sum is σ = 1243313444324. Its totient is φ = 1243313444322.

The previous prime is 1243313444311. The next prime is 1243313444381. The reversal of 1243313444323 is 3234443133421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1243313444323 - 2¹⁷ = 1243313313251 is a prime.

It is not a weakly prime, because it can be changed into another prime (1243313444383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621656722161 + 621656722162.

It is an arithmetic number, because the mean of its divisors is an integer number (621656722162).

Almost surely, 2^{1243313444323} is an apocalyptic number.

1243313444323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243313444323 is an equidigital number, since it uses as much as digits as its factorization.

1243313444323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 37.

Adding to 1243313444323 its reverse (3234443133421), we get a palindrome (4477756577744).

The spelling of 1243313444323 in words is "one trillion, two hundred forty-three billion, three hundred thirteen million, four hundred forty-four thousand, three hundred twenty-three".