20320112123 has 8 divisors (see below), whose sum is σ = 20654079600. Its totient is φ = 19988827488.

The previous prime is 20320112119. The next prime is 20320112149. The reversal of 20320112123 is 32121102302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20320112123 - 2² = 20320112119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20320114123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 655436 + ... + 685737.

It is an arithmetic number, because the mean of its divisors is an integer number (2581759950).

Almost surely, 2^20320112123 is an apocalyptic number.

20320112123 is a deficient number, since it is larger than the sum of its proper divisors (333967477).

20320112123 is a wasteful number, since it uses less digits than its factorization.

20320112123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341421.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20320112123 its reverse (32121102302), we get a palindrome (52441214425).

The spelling of 20320112123 in words is "twenty billion, three hundred twenty million, one hundred twelve thousand, one hundred twenty-three".