2113243240 has 32 divisors (see below), whose sum is σ = 4763205000. Its totient is φ = 843802624.

The previous prime is 2113243229. The next prime is 2113243241. The reversal of 2113243240 is 423423112.

It can be written as a sum of positive squares in 4 ways, for example, as 1130169924 + 983073316 = 33618^2 + 31354^2 .

It is not an unprimeable number, because it can be changed into a prime (2113243241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23665 + ... + 69184.

Almost surely, 2^2113243240 is an apocalyptic number.

2113243240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2113243240 is an abundant number, since it is smaller than the sum of its proper divisors (2649961760).

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

2113243240 is a wasteful number, since it uses less digits than its factorization.

2113243240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93429 (or 93425 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 2113243240 is about 45970.0254513743. The cubic root of 2113243240 is about 1283.2654335620.

Adding to 2113243240 its reverse (423423112), we get a palindrome (2536666352).

The spelling of 2113243240 in words is "two billion, one hundred thirteen million, two hundred forty-three thousand, two hundred forty".