20321231302230 has 64 divisors (see below), whose sum is σ = 53420518837440. Its totient is φ = 4924360577024.

The previous prime is 20321231302159. The next prime is 20321231302231. The reversal of 20321231302230 is 3220313212302.

It is a self number, because there is not a number n which added to its sum of digits gives 20321231302230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20321231302231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 686977479 + ... + 687007058.

It is an arithmetic number, because the mean of its divisors is an integer number (834695606835).

Almost surely, 2^{20321231302230} is an apocalyptic number.

20321231302230 is an abundant number, since it is smaller than the sum of its proper divisors (33099287535210).

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

20321231302230 is a wasteful number, since it uses less digits than its factorization.

20321231302230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373984593.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 20321231302230 its reverse (3220313212302), we get a palindrome (23541544514532).

The spelling of 20321231302230 in words is "twenty trillion, three hundred twenty-one billion, two hundred thirty-one million, three hundred two thousand, two hundred thirty".