20143423230 has 192 divisors, whose sum is σ = 61772751360. Its totient is φ = 4172103936.

The previous prime is 20143423213. The next prime is 20143423241. The reversal of 20143423230 is 3232434102.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20143423230.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 626712 + ... + 658068.

It is an arithmetic number, because the mean of its divisors is an integer number (321733080).

Almost surely, 2^20143423230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20143423230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30886375680).

20143423230 is an abundant number, since it is smaller than the sum of its proper divisors (41629328130).

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

20143423230 is a wasteful number, since it uses less digits than its factorization.

20143423230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31423 (or 31416 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 20143423230 its reverse (3232434102), we get a palindrome (23375857332).

The spelling of 20143423230 in words is "twenty billion, one hundred forty-three million, four hundred twenty-three thousand, two hundred thirty".