31840509696 has 144 divisors (see below), whose sum is σ = 88785865728. Its totient is φ = 10117324800.

The previous prime is 31840509689. The next prime is 31840509731. The reversal of 31840509696 is 69690504813.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1585156 + ... + 1605116.

It is an arithmetic number, because the mean of its divisors is an integer number (616568512).

Almost surely, 2^31840509696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31840509696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44392932864).

31840509696 is an abundant number, since it is smaller than the sum of its proper divisors (56945356032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31840509696 is a wasteful number, since it uses less digits than its factorization.

31840509696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20078 (or 20064 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 51.

The spelling of 31840509696 in words is "thirty-one billion, eight hundred forty million, five hundred nine thousand, six hundred ninety-six".