31864840848 has 30 divisors (see below), whose sum is σ = 89177298054. Its totient is φ = 10621613568.

The previous prime is 31864840841. The next prime is 31864840859. The reversal of 31864840848 is 84804846813.

31864840848 is a `hidden beast` number, since 3 + 1 + 86 + 484 + 0 + 84 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 29533109904 + 2331730944 = 171852^2 + 48288^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31864840794 and 31864840803.

It is not an unprimeable number, because it can be changed into a prime (31864840841) 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 5 ways as a sum of consecutive naturals, for example, 110641665 + ... + 110641952.

Almost surely, 2^31864840848 is an apocalyptic number.

It is an amenable number.

31864840848 is an abundant number, since it is smaller than the sum of its proper divisors (57312457206).

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

31864840848 is a wasteful number, since it uses less digits than its factorization.

31864840848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221283631 (or 221283622 counting only the distinct ones).

The product of its (nonzero) digits is 4718592, while the sum is 54.

The spelling of 31864840848 in words is "thirty-one billion, eight hundred sixty-four million, eight hundred forty thousand, eight hundred forty-eight".