2120311312 has 20 divisors (see below), whose sum is σ = 4694975296. Its totient is φ = 908704800.

The previous prime is 2120311301. The next prime is 2120311337. The reversal of 2120311312 is 2131130212.

It is a super-2 number, since 2×2120311312² = 8991440119590322688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9465564 + ... + 9465787.

Almost surely, 2^2120311312 is an apocalyptic number.

It is an amenable number.

2120311312 is an abundant number, since it is smaller than the sum of its proper divisors (2574663984).

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

2120311312 is a wasteful number, since it uses less digits than its factorization.

2120311312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18931366 (or 18931360 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2120311312 is about 46046.8382410780. The cubic root of 2120311312 is about 1284.6945353346.

Adding to 2120311312 its reverse (2131130212), we get a palindrome (4251441524).

The spelling of 2120311312 in words is "two billion, one hundred twenty million, three hundred eleven thousand, three hundred twelve".