243395303913 has 12 divisors (see below), whose sum is σ = 351683754240. Its totient is φ = 162211493016.

The previous prime is 243395303897. The next prime is 243395303951. The reversal of 243395303913 is 319303593342.

243395303913 is a `hidden beast` number, since 2 + 4 + 339 + 5 + 303 + 9 + 1 + 3 = 666.

It is not a de Polignac number, because 243395303913 - 2⁴ = 243395303897 is a prime.

It is a super-2 number, since 2×243395303913² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (243395313913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4307281 + ... + 4363422.

It is an arithmetic number, because the mean of its divisors is an integer number (29306979520).

Almost surely, 2^243395303913 is an apocalyptic number.

It is an amenable number.

243395303913 is a deficient number, since it is larger than the sum of its proper divisors (108288450327).

243395303913 is a wasteful number, since it uses less digits than its factorization.

243395303913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8673828 (or 8673825 counting only the distinct ones).

The product of its (nonzero) digits is 787320, while the sum is 45.

The spelling of 243395303913 in words is "two hundred forty-three billion, three hundred ninety-five million, three hundred three thousand, nine hundred thirteen".