2113020312 has 64 divisors (see below), whose sum is σ = 5726703360. Its totient is φ = 645840000.

The previous prime is 2113020311. The next prime is 2113020337. The reversal of 2113020312 is 2130203112.

2113020312 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2113020291 and 2113020300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113020311) 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, 24687 + ... + 69537.

It is an arithmetic number, because the mean of its divisors is an integer number (89479740).

Almost surely, 2^2113020312 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 2113020312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2863351680).

2113020312 is an abundant number, since it is smaller than the sum of its proper divisors (3613683048).

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

2113020312 is a wasteful number, since it uses less digits than its factorization.

2113020312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45024 (or 45020 counting only the distinct ones).

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

The square root of 2113020312 is about 45967.6006769986. The cubic root of 2113020312 is about 1283.2203076861.

Adding to 2113020312 its reverse (2130203112), we get a palindrome (4243223424).

The spelling of 2113020312 in words is "two billion, one hundred thirteen million, twenty thousand, three hundred twelve".