2031021312 has 72 divisors (see below), whose sum is σ = 5417744640. Its totient is φ = 675471360.

The previous prime is 2031021299. The next prime is 2031021347. The reversal of 2031021312 is 2131201302.

It is a junction number, because it is equal to n+sod(n) for n = 2031021291 and 2031021300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365112 + ... + 370632.

Almost surely, 2^2031021312 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 2031021312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2708872320).

2031021312 is an abundant number, since it is smaller than the sum of its proper divisors (3386723328).

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

2031021312 is an equidigital number, since it uses as much as digits as its factorization.

2031021312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6019 (or 6005 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2031021312 is about 45066.8538063176. The cubic root of 2031021312 is about 1266.4017253201.

Adding to 2031021312 its reverse (2131201302), we get a palindrome (4162222614).

The spelling of 2031021312 in words is "two billion, thirty-one million, twenty-one thousand, three hundred twelve".