20430303012 has 144 divisors (see below), whose sum is σ = 61819011072. Its totient is φ = 5562406080.

The previous prime is 20430303011. The next prime is 20430303029. The reversal of 20430303012 is 21030303402.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20430303011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1564213 + ... + 1577219.

It is an arithmetic number, because the mean of its divisors is an integer number (429298688).

Almost surely, 2^20430303012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20430303012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30909505536).

20430303012 is an abundant number, since it is smaller than the sum of its proper divisors (41388708060).

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

20430303012 is a wasteful number, since it uses less digits than its factorization.

20430303012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13318 (or 13313 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 20430303012 its reverse (21030303402), we get a palindrome (41460606414).

The spelling of 20430303012 in words is "twenty billion, four hundred thirty million, three hundred three thousand, twelve".