68312304313 has 16 divisors (see below), whose sum is σ = 75619756800. Its totient is φ = 61191683280.

The previous prime is 68312304293. The next prime is 68312304337. The reversal of 68312304313 is 31340321386.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68312304313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68312304373) 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 15 ways as a sum of consecutive naturals, for example, 247318 + ... + 444736.

It is an arithmetic number, because the mean of its divisors is an integer number (4726234800).

Almost surely, 2^68312304313 is an apocalyptic number.

It is an amenable number.

68312304313 is a deficient number, since it is larger than the sum of its proper divisors (7307452487).

68312304313 is a wasteful number, since it uses less digits than its factorization.

68312304313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197892.

The product of its (nonzero) digits is 31104, while the sum is 34.

Adding to 68312304313 its reverse (31340321386), we get a palindrome (99652625699).

The spelling of 68312304313 in words is "sixty-eight billion, three hundred twelve million, three hundred four thousand, three hundred thirteen".