340542243304303 has 4 divisors (see below), whose sum is σ = 360574139969280. Its totient is φ = 320510346639328.

The previous prime is 340542243304297. The next prime is 340542243304313. The reversal of 340542243304303 is 303403342245043.

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-340542243304303 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 (340542243304313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10015948332463 + ... + 10015948332496.

It is an arithmetic number, because the mean of its divisors is an integer number (90143534992320).

Almost surely, 2^{340542243304303} is an apocalyptic number.

340542243304303 is a deficient number, since it is larger than the sum of its proper divisors (20031896664977).

340542243304303 is a wasteful number, since it uses less digits than its factorization.

340542243304303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20031896664976.

The product of its (nonzero) digits is 1244160, while the sum is 40.

Adding to 340542243304303 its reverse (303403342245043), we get a palindrome (643945585549346).

The spelling of 340542243304303 in words is "three hundred forty trillion, five hundred forty-two billion, two hundred forty-three million, three hundred four thousand, three hundred three".