20312103231121 has 8 divisors (see below), whose sum is σ = 22383283704320. Its totient is φ = 18313595757072.

The previous prime is 20312103231109. The next prime is 20312103231151. The reversal of 20312103231121 is 12113230121302.

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 20312103231121 - 2³⁵ = 20277743492753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20312103231092 and 20312103231101.

It is not an unprimeable number, because it can be changed into a prime (20312103231151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18168249201 + ... + 18168250318.

It is an arithmetic number, because the mean of its divisors is an integer number (2797910463040).

Almost surely, 2^{20312103231121} is an apocalyptic number.

It is an amenable number.

20312103231121 is a deficient number, since it is larger than the sum of its proper divisors (2071180473199).

20312103231121 is a wasteful number, since it uses less digits than its factorization.

20312103231121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36336499575.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 20312103231121 its reverse (12113230121302), we get a palindrome (32425333352423).

The spelling of 20312103231121 in words is "twenty trillion, three hundred twelve billion, one hundred three million, two hundred thirty-one thousand, one hundred twenty-one".