12311030020 has 48 divisors (see below), whose sum is σ = 26205666480. Its totient is φ = 4857532416.

The previous prime is 12311030003. The next prime is 12311030051. The reversal of 12311030020 is 2003011321.

12311030020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 1294848256 + 11016181764 = 35984^2 + 104958^2 .

It is a super-2 number, since 2×12311030020² (a number of 21 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 762754 + ... + 778726.

It is an arithmetic number, because the mean of its divisors is an integer number (545951385).

Almost surely, 2^12311030020 is an apocalyptic number.

12311030020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12311030020 is an abundant number, since it is smaller than the sum of its proper divisors (13894636460).

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

12311030020 is a wasteful number, since it uses less digits than its factorization.

12311030020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16504 (or 16502 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 12311030020 its reverse (2003011321), we get a palindrome (14314041341).

The spelling of 12311030020 in words is "twelve billion, three hundred eleven million, thirty thousand, twenty".