20321230020312 has 128 divisors (see below), whose sum is σ = 55052265058560. Its totient is φ = 6213692736000.

The previous prime is 20321230020281. The next prime is 20321230020341. The reversal of 20321230020312 is 21302003212302.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 837942187 + ... + 837966437.

It is an arithmetic number, because the mean of its divisors is an integer number (430095820770).

Almost surely, 2^{20321230020312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20321230020312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27526132529280).

20321230020312 is an abundant number, since it is smaller than the sum of its proper divisors (34731035038248).

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

20321230020312 is a wasteful number, since it uses less digits than its factorization.

20321230020312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40913 (or 40909 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20321230020312 its reverse (21302003212302), we get a palindrome (41623233232614).

The spelling of 20321230020312 in words is "twenty trillion, three hundred twenty-one billion, two hundred thirty million, twenty thousand, three hundred twelve".