1240043234323 has 2 divisors, whose sum is σ = 1240043234324. Its totient is φ = 1240043234322.

The previous prime is 1240043234317. The next prime is 1240043234327. The reversal of 1240043234323 is 3234323400421.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (3234323400421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1240043234323 - 2³⁷ = 1102604280851 is a prime.

It is not a weakly prime, because it can be changed into another prime (1240043234327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620021617161 + 620021617162.

It is an arithmetic number, because the mean of its divisors is an integer number (620021617162).

Almost surely, 2^{1240043234323} is an apocalyptic number.

1240043234323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240043234323 is an equidigital number, since it uses as much as digits as its factorization.

1240043234323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 1240043234323 its reverse (3234323400421), we get a palindrome (4474366634744).

The spelling of 1240043234323 in words is "one trillion, two hundred forty billion, forty-three million, two hundred thirty-four thousand, three hundred twenty-three".