20312113012230 has 192 divisors, whose sum is σ = 56290071156480. Its totient is φ = 4661810558976.

The previous prime is 20312113012223. The next prime is 20312113012231. The reversal of 20312113012230 is 3221031121302.

It is a junction number, because it is equal to n+sod(n) for n = 20312113012197 and 20312113012206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312113012231) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11217841 + ... + 12902099.

It is an arithmetic number, because the mean of its divisors is an integer number (293177453940).

Almost surely, 2^{20312113012230} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20312113012230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28145035578240).

20312113012230 is an abundant number, since it is smaller than the sum of its proper divisors (35977958144250).

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

20312113012230 is a wasteful number, since it uses less digits than its factorization.

20312113012230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1684423 (or 1684406 counting only the distinct ones).

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

Adding to 20312113012230 its reverse (3221031121302), we get a palindrome (23533144133532).

The spelling of 20312113012230 in words is "twenty trillion, three hundred twelve billion, one hundred thirteen million, twelve thousand, two hundred thirty".