2102031312 has 20 divisors (see below), whose sum is σ = 5430247680. Its totient is φ = 700677088.

The previous prime is 2102031301. The next prime is 2102031343. The reversal of 2102031312 is 2131302012.

It is a junction number, because it is equal to n+sod(n) for n = 2102031291 and 2102031300.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21896112 + ... + 21896207.

It is an arithmetic number, because the mean of its divisors is an integer number (271512384).

Almost surely, 2^2102031312 is an apocalyptic number.

It is an amenable number.

2102031312 is an abundant number, since it is smaller than the sum of its proper divisors (3328216368).

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

2102031312 is a wasteful number, since it uses less digits than its factorization.

2102031312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43792330 (or 43792324 counting only the distinct ones).

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

The square root of 2102031312 is about 45847.9150234773. The cubic root of 2102031312 is about 1280.9919296781.

Adding to 2102031312 its reverse (2131302012), we get a palindrome (4233333324).

The spelling of 2102031312 in words is "two billion, one hundred two million, thirty-one thousand, three hundred twelve".