31827016872 has 96 divisors (see below), whose sum is σ = 99527937600. Its totient is φ = 8999672832.

The previous prime is 31827016867. The next prime is 31827016873. The reversal of 31827016872 is 27861072813.

31827016872 is a `hidden beast` number, since 318 + 270 + 1 + 68 + 7 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (31827016873) 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 23 ways as a sum of consecutive naturals, for example, 276622 + ... + 374397.

It is an arithmetic number, because the mean of its divisors is an integer number (1036749350).

Almost surely, 2^31827016872 is an apocalyptic number.

It is an amenable number.

31827016872 is an abundant number, since it is smaller than the sum of its proper divisors (67700920728).

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

31827016872 is a wasteful number, since it uses less digits than its factorization.

31827016872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651135 (or 651128 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The spelling of 31827016872 in words is "thirty-one billion, eight hundred twenty-seven million, sixteen thousand, eight hundred seventy-two".