2113231312 has 30 divisors (see below), whose sum is σ = 4230753954. Its totient is φ = 1022523840.

The previous prime is 2113231301. The next prime is 2113231333. The reversal of 2113231312 is 2131323112.

It can be written as a sum of positive squares in only one way, i.e., 2059707456 + 53523856 = 45384^2 + 7316^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2113231312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53343 + ... + 84094.

Almost surely, 2^2113231312 is an apocalyptic number.

It is an amenable number.

2113231312 is an abundant number, since it is smaller than the sum of its proper divisors (2117522642).

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

2113231312 is a wasteful number, since it uses less digits than its factorization.

2113231312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137507 (or 137470 counting only the distinct ones).

The product of its digits is 216, while the sum is 19.

The square root of 2113231312 is about 45969.8957144782. The cubic root of 2113231312 is about 1283.2630191344.

Adding to 2113231312 its reverse (2131323112), we get a palindrome (4244554424).

The spelling of 2113231312 in words is "two billion, one hundred thirteen million, two hundred thirty-one thousand, three hundred twelve".