20330220231 has 24 divisors (see below), whose sum is σ = 29478010224. Its totient is φ = 13501797120.

The previous prime is 20330220187. The next prime is 20330220247. The reversal of 20330220231 is 13202203302.

It is a happy number.

It is not a de Polignac number, because 20330220231 - 2⁷ = 20330220103 is a prime.

It is a super-2 number, since 2×20330220231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20330220431) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 5054001 + ... + 5058021.

It is an arithmetic number, because the mean of its divisors is an integer number (1228250426).

Almost surely, 2^20330220231 is an apocalyptic number.

20330220231 is a deficient number, since it is larger than the sum of its proper divisors (9147789993).

20330220231 is a wasteful number, since it uses less digits than its factorization.

20330220231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6031 (or 6028 counting only the distinct ones).

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

Adding to 20330220231 its reverse (13202203302), we get a palindrome (33532423533).

The spelling of 20330220231 in words is "twenty billion, three hundred thirty million, two hundred twenty thousand, two hundred thirty-one".