20000310012 has 36 divisors (see below), whose sum is σ = 50954432256. Its totient is φ = 6614274240.

The previous prime is 20000309983. The next prime is 20000310019. The reversal of 20000310012 is 21001300002.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×20000310012² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20000309976 and 20000310003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000310019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2182689 + ... + 2191832.

It is an arithmetic number, because the mean of its divisors is an integer number (1415400896).

Almost surely, 2^20000310012 is an apocalyptic number.

It is an amenable number.

20000310012 is an abundant number, since it is smaller than the sum of its proper divisors (30954122244).

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

20000310012 is a wasteful number, since it uses less digits than its factorization.

20000310012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4374658 (or 4374653 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 20000310012 its reverse (21001300002), we get a palindrome (41001610014).

The spelling of 20000310012 in words is "twenty billion, three hundred ten thousand, twelve".