2331440243 has 4 divisors (see below), whose sum is σ = 2543389368. Its totient is φ = 2119491120.

The previous prime is 2331440213. The next prime is 2331440257. The reversal of 2331440243 is 3420441332.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2331440243 - 2⁸ = 2331439987 is a prime.

It is a super-2 number, since 2×2331440243² = 10871227213359798098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2331440213) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 105974546 + ... + 105974567.

It is an arithmetic number, because the mean of its divisors is an integer number (635847342).

Almost surely, 2^2331440243 is an apocalyptic number.

2331440243 is a deficient number, since it is larger than the sum of its proper divisors (211949125).

2331440243 is a wasteful number, since it uses less digits than its factorization.

2331440243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211949124.

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 2331440243 is about 48284.9898312095. The cubic root of 2331440243 is about 1325.9936048791.

Adding to 2331440243 its reverse (3420441332), we get a palindrome (5751881575).

The spelling of 2331440243 in words is "two billion, three hundred thirty-one million, four hundred forty thousand, two hundred forty-three".