20123313320312 has 8 divisors (see below), whose sum is σ = 37731212475600. Its totient is φ = 10061656660152.

The previous prime is 20123313320309. The next prime is 20123313320329. The reversal of 20123313320312 is 21302331332102.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1257707082512 + ... + 1257707082527.

It is an arithmetic number, because the mean of its divisors is an integer number (4716401559450).

Almost surely, 2^{20123313320312} is an apocalyptic number.

It is an amenable number.

20123313320312 is a deficient number, since it is larger than the sum of its proper divisors (17607899155288).

20123313320312 is a wasteful number, since it uses less digits than its factorization.

20123313320312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2515414165045 (or 2515414165041 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 20123313320312 its reverse (21302331332102), we get a palindrome (41425644652414).

The spelling of 20123313320312 in words is "twenty trillion, one hundred twenty-three billion, three hundred thirteen million, three hundred twenty thousand, three hundred twelve".