20310000000 has 256 divisors, whose sum is σ = 67534983360. Its totient is φ = 5408000000.

The previous prime is 20309999989. The next prime is 20310000013. The reversal of 20310000000 is 1302.

It is a super-3 number, since 3×20310000000³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29999662 + ... + 30000338.

Almost surely, 2^20310000000 is an apocalyptic number.

20310000000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20310000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33767491680).

20310000000 is an abundant number, since it is smaller than the sum of its proper divisors (47224983360).

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

20310000000 is an frugal number, since it uses more digits than its factorization.

20310000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729 (or 687 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 6.

Adding to 20310000000 its reverse (1302), we get a palindrome (20310001302).

The spelling of 20310000000 in words is "twenty billion, three hundred ten million", and thus it is an aban number.