2131110312 has 64 divisors (see below), whose sum is σ = 5478840000. Its totient is φ = 690278400.

The previous prime is 2131110299. The next prime is 2131110313. The reversal of 2131110312 is 2130111312.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2131110291 and 2131110300.

It is not an unprimeable number, because it can be changed into a prime (2131110313) 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, 1330312 + ... + 1331912.

It is an arithmetic number, because the mean of its divisors is an integer number (85606875).

Almost surely, 2^2131110312 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 2131110312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2739420000).

2131110312 is an abundant number, since it is smaller than the sum of its proper divisors (3347729688).

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

2131110312 is a wasteful number, since it uses less digits than its factorization.

2131110312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3146 (or 3142 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 2131110312 is about 46163.9503508961. The cubic root of 2131110312 is about 1286.8718775068.

Adding to 2131110312 its reverse (2130111312), we get a palindrome (4261221624).

The spelling of 2131110312 in words is "two billion, one hundred thirty-one million, one hundred ten thousand, three hundred twelve".