31330000212 has 96 divisors (see below), whose sum is σ = 84055910400. Its totient is φ = 8897012352.

The previous prime is 31330000189. The next prime is 31330000237. The reversal of 31330000212 is 21200003313.

It is a junction number, because it is equal to n+sod(n) for n = 31330000191 and 31330000200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15830239 + ... + 15832217.

It is an arithmetic number, because the mean of its divisors is an integer number (875582400).

Almost surely, 2^31330000212 is an apocalyptic number.

It is an amenable number.

31330000212 is an abundant number, since it is smaller than the sum of its proper divisors (52725910188).

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

31330000212 is a wasteful number, since it uses less digits than its factorization.

31330000212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3045 (or 3043 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 31330000212 its reverse (21200003313), we get a palindrome (52530003525).

The spelling of 31330000212 in words is "thirty-one billion, three hundred thirty million, two hundred twelve", and thus it is an aban number.