20303023230 has 192 divisors, whose sum is σ = 64704407040. Its totient is φ = 4313357568.

The previous prime is 20303023229. The next prime is 20303023253. The reversal of 20303023230 is 3232030302.

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

It is a Curzon number.

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, 618409 + ... + 650411.

It is an arithmetic number, because the mean of its divisors is an integer number (337002120).

Almost surely, 2^20303023230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20303023230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32352203520).

20303023230 is an abundant number, since it is smaller than the sum of its proper divisors (44401383810).

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

20303023230 is a wasteful number, since it uses less digits than its factorization.

20303023230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32095 (or 32092 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 18.

Adding to 20303023230 its reverse (3232030302), we get a palindrome (23535053532).

The spelling of 20303023230 in words is "twenty billion, three hundred three million, twenty-three thousand, two hundred thirty".