20312330212 has 12 divisors (see below), whose sum is σ = 35548345840. Its totient is φ = 10155659976.

The previous prime is 20312330161. The next prime is 20312330219. The reversal of 20312330212 is 21203321302.

It is a self number, because there is not a number n which added to its sum of digits gives 20312330212.

It is not an unprimeable number, because it can be changed into a prime (20312330219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27162 + ... + 203377.

Almost surely, 2^20312330212 is an apocalyptic number.

It is an amenable number.

20312330212 is a deficient number, since it is larger than the sum of its proper divisors (15236015628).

20312330212 is a wasteful number, since it uses less digits than its factorization.

20312330212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252570 (or 252568 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20312330212 its reverse (21203321302), we get a palindrome (41515651514).

The spelling of 20312330212 in words is "twenty billion, three hundred twelve million, three hundred thirty thousand, two hundred twelve".