211031000012 has 24 divisors (see below), whose sum is σ = 446889177504. Its totient is φ = 85121747712.

The previous prime is 211031000009. The next prime is 211031000039. The reversal of 211031000012 is 210000130112.

It is a junction number, because it is equal to n+sod(n) for n = 211030999957 and 211031000002.

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, 221670743 + ... + 221671694.

It is an arithmetic number, because the mean of its divisors is an integer number (18620382396).

Almost surely, 2^211031000012 is an apocalyptic number.

It is an amenable number.

211031000012 is an abundant number, since it is smaller than the sum of its proper divisors (235858177492).

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

211031000012 is a wasteful number, since it uses less digits than its factorization.

211031000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443342465 (or 443342463 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 211031000012 its reverse (210000130112), we get a palindrome (421031130124).

The spelling of 211031000012 in words is "two hundred eleven billion, thirty-one million, twelve", and thus it is an aban number.