2120310312 has 32 divisors (see below), whose sum is σ = 5612587200. Its totient is φ = 665195264.

The previous prime is 2120310299. The next prime is 2120310319. The reversal of 2120310312 is 2130130212.

It is a junction number, because it is equal to n+sod(n) for n = 2120310291 and 2120310300.

It is not an unprimeable number, because it can be changed into a prime (2120310319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2598012 + ... + 2598827.

It is an arithmetic number, because the mean of its divisors is an integer number (175393350).

Almost surely, 2^2120310312 is an apocalyptic number.

It is an amenable number.

2120310312 is an abundant number, since it is smaller than the sum of its proper divisors (3492276888).

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

2120310312 is a wasteful number, since it uses less digits than its factorization.

2120310312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5196865 (or 5196861 counting only the distinct ones).

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

The square root of 2120310312 is about 46046.8273825678. The cubic root of 2120310312 is about 1284.6943333682.

Adding to 2120310312 its reverse (2130130212), we get a palindrome (4250440524).

The spelling of 2120310312 in words is "two billion, one hundred twenty million, three hundred ten thousand, three hundred twelve".