240343020513 has 6 divisors (see below), whose sum is σ = 347162140754. Its totient is φ = 160228680336.

The previous prime is 240343020479. The next prime is 240343020517. The reversal of 240343020513 is 315020343042.

240343020513 is a `hidden beast` number, since 2 + 403 + 43 + 0 + 205 + 13 = 666.

It can be written as a sum of positive squares in only one way, i.e., 238956724224 + 1386296289 = 488832^2 + 37233^2 .

It is not a de Polignac number, because 240343020513 - 2¹⁴ = 240343004129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240343020517) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13352390020 + ... + 13352390037.

Almost surely, 2^240343020513 is an apocalyptic number.

It is an amenable number.

240343020513 is a deficient number, since it is larger than the sum of its proper divisors (106819120241).

240343020513 is a wasteful number, since it uses less digits than its factorization.

240343020513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26704780063 (or 26704780060 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 240343020513 its reverse (315020343042), we get a palindrome (555363363555).

The spelling of 240343020513 in words is "two hundred forty billion, three hundred forty-three million, twenty thousand, five hundred thirteen".