20123321320312 has 16 divisors (see below), whose sum is σ = 43121402829360. Its totient is φ = 8624280565824.

The previous prime is 20123321320309. The next prime is 20123321320369. The reversal of 20123321320312 is 21302312332102.

It is a super-3 number, since 3×20123321320312³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179672511733 + ... + 179672511844.

It is an arithmetic number, because the mean of its divisors is an integer number (2695087676835).

Almost surely, 2^{20123321320312} is an apocalyptic number.

It is an amenable number.

20123321320312 is an abundant number, since it is smaller than the sum of its proper divisors (22998081509048).

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

20123321320312 is a wasteful number, since it uses less digits than its factorization.

20123321320312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359345023590 (or 359345023586 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 20123321320312 its reverse (21302312332102), we get a palindrome (41425633652414).

The spelling of 20123321320312 in words is "twenty trillion, one hundred twenty-three billion, three hundred twenty-one million, three hundred twenty thousand, three hundred twelve".