20312120312130 has 128 divisors (see below), whose sum is σ = 49834769080320. Its totient is φ = 5297521282560.

The previous prime is 20312120312117. The next prime is 20312120312179. The reversal of 20312120312130 is 3121302121302.

It is a junction number, because it is equal to n+sod(n) for n = 20312120312097 and 20312120312106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 99291150 + ... + 99495510.

It is an arithmetic number, because the mean of its divisors is an integer number (389334133440).

Almost surely, 2^{20312120312130} is an apocalyptic number.

20312120312130 is an abundant number, since it is smaller than the sum of its proper divisors (29522648768190).

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

20312120312130 is a wasteful number, since it uses less digits than its factorization.

20312120312130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204856.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 20312120312130 its reverse (3121302121302), we get a palindrome (23433422433432).

The spelling of 20312120312130 in words is "twenty trillion, three hundred twelve billion, one hundred twenty million, three hundred twelve thousand, one hundred thirty".