340243305513 has 16 divisors (see below), whose sum is σ = 481458007296. Its totient is φ = 212990654720.

The previous prime is 340243305509. The next prime is 340243305529. The reversal of 340243305513 is 315503342043.

It is a cyclic number.

It is not a de Polignac number, because 340243305513 - 2² = 340243305509 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (340243305313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7717506 + ... + 7761467.

It is an arithmetic number, because the mean of its divisors is an integer number (30091125456).

Almost surely, 2^340243305513 is an apocalyptic number.

It is an amenable number.

340243305513 is a deficient number, since it is larger than the sum of its proper divisors (141214701783).

340243305513 is a wasteful number, since it uses less digits than its factorization.

340243305513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15479424.

The product of its (nonzero) digits is 64800, while the sum is 33.

Adding to 340243305513 its reverse (315503342043), we get a palindrome (655746647556).

The spelling of 340243305513 in words is "three hundred forty billion, two hundred forty-three million, three hundred five thousand, five hundred thirteen".