2031021123312 has 80 divisors (see below), whose sum is σ = 5302685606400. Its totient is φ = 669801302016.

The previous prime is 2031021123259. The next prime is 2031021123317. The reversal of 2031021123312 is 2133211201302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031021123317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14002939 + ... + 14147237.

It is an arithmetic number, because the mean of its divisors is an integer number (66283570080).

Almost surely, 2^{2031021123312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2031021123312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2651342803200).

2031021123312 is an abundant number, since it is smaller than the sum of its proper divisors (3271664483088).

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

2031021123312 is a wasteful number, since it uses less digits than its factorization.

2031021123312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147430 (or 147424 counting only the distinct ones).

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

Adding to 2031021123312 its reverse (2133211201302), we get a palindrome (4164232324614).

The spelling of 2031021123312 in words is "two trillion, thirty-one billion, twenty-one million, one hundred twenty-three thousand, three hundred twelve".