31010205012 has 24 divisors (see below), whose sum is σ = 73896660096. Its totient is φ = 10116804288.

The previous prime is 31010205001. The next prime is 31010205041. The reversal of 31010205012 is 21050201013.

It is a junction number, because it is equal to n+sod(n) for n = 31010204982 and 31010205000.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 27490753 + ... + 27491880.

It is an arithmetic number, because the mean of its divisors is an integer number (3079027504).

Almost surely, 2^31010205012 is an apocalyptic number.

It is an amenable number.

31010205012 is an abundant number, since it is smaller than the sum of its proper divisors (42886455084).

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

31010205012 is a wasteful number, since it uses less digits than its factorization.

31010205012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54982687 (or 54982685 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

Adding to 31010205012 its reverse (21050201013), we get a palindrome (52060406025).

The spelling of 31010205012 in words is "thirty-one billion, ten million, two hundred five thousand, twelve".