20423430300 has 324 divisors, whose sum is σ = 74442875976. Its totient is φ = 4308595200.

The previous prime is 20423430289. The next prime is 20423430317. The reversal of 20423430300 is 303432402.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 2480190 + ... + 2488410.

Almost surely, 2^20423430300 is an apocalyptic number.

20423430300 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 20423430300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37221437988).

20423430300 is an abundant number, since it is smaller than the sum of its proper divisors (54019445676).

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

20423430300 is a wasteful number, since it uses less digits than its factorization.

20423430300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8278 (or 8251 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 21.

Adding to 20423430300 its reverse (303432402), we get a palindrome (20726862702).

The spelling of 20423430300 in words is "twenty billion, four hundred twenty-three million, four hundred thirty thousand, three hundred".