31684848613 has 12 divisors (see below), whose sum is σ = 34842386124. Its totient is φ = 28791804800.

The previous prime is 31684848577. The next prime is 31684848709.

31684848613 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 24802155169 + 6882693444 = 157487^2 + 82962^2 .

It is not a de Polignac number, because 31684848613 - 2¹⁷ = 31684717541 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 (31684848313) 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 11 ways as a sum of consecutive naturals, for example, 226173 + ... + 338413.

It is an arithmetic number, because the mean of its divisors is an integer number (2903532177).

Almost surely, 2^31684848613 is an apocalyptic number.

It is an amenable number.

31684848613 is a deficient number, since it is larger than the sum of its proper divisors (3157537511).

31684848613 is a wasteful number, since it uses less digits than its factorization.

31684848613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114596 (or 114585 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 52.

The spelling of 31684848613 in words is "thirty-one billion, six hundred eighty-four million, eight hundred forty-eight thousand, six hundred thirteen".