20312130112 has 28 divisors (see below), whose sum is σ = 40428698416. Its totient is φ = 10125371520.

The previous prime is 20312130103. The next prime is 20312130119. The reversal of 20312130112 is 21103121302.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (20312130119) 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, 458238 + ... + 500605.

Almost surely, 2^20312130112 is an apocalyptic number.

It is an amenable number.

20312130112 is a deficient number, since it is larger than the sum of its proper divisors (20116568304).

20312130112 is an equidigital number, since it uses as much as digits as its factorization.

20312130112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959186 (or 959176 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20312130112 its reverse (21103121302), we get a palindrome (41415251414).

The spelling of 20312130112 in words is "twenty billion, three hundred twelve million, one hundred thirty thousand, one hundred twelve".