31071539912 has 16 divisors (see below), whose sum is σ = 66581871360. Its totient is φ = 13316374224.

The previous prime is 31071539911. The next prime is 31071539957. The reversal of 31071539912 is 21993517013.

It is a self number, because there is not a number n which added to its sum of digits gives 31071539912.

It is not an unprimeable number, because it can be changed into a prime (31071539911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277424408 + ... + 277424519.

It is an arithmetic number, because the mean of its divisors is an integer number (4161366960).

Almost surely, 2^31071539912 is an apocalyptic number.

It is an amenable number.

31071539912 is an abundant number, since it is smaller than the sum of its proper divisors (35510331448).

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

31071539912 is a wasteful number, since it uses less digits than its factorization.

31071539912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554848940 (or 554848936 counting only the distinct ones).

The product of its (nonzero) digits is 51030, while the sum is 41.

The spelling of 31071539912 in words is "thirty-one billion, seventy-one million, five hundred thirty-nine thousand, nine hundred twelve".