20031130120312 has 48 divisors (see below), whose sum is σ = 39340643256720. Its totient is φ = 9559708318080.

The previous prime is 20031130120307. The next prime is 20031130120319. The reversal of 20031130120312 is 21302103113002.

It is a self number, because there is not a number n which added to its sum of digits gives 20031130120312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20031130120319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17284708 + ... + 18407155.

It is an arithmetic number, because the mean of its divisors is an integer number (819596734515).

Almost surely, 2^{20031130120312} is an apocalyptic number.

It is an amenable number.

20031130120312 is a deficient number, since it is larger than the sum of its proper divisors (19309513136408).

20031130120312 is a wasteful number, since it uses less digits than its factorization.

20031130120312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35692004 (or 35691969 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20031130120312 its reverse (21302103113002), we get a palindrome (41333233233314).

The spelling of 20031130120312 in words is "twenty trillion, thirty-one billion, one hundred thirty million, one hundred twenty thousand, three hundred twelve".