2340123243 has 4 divisors (see below), whose sum is σ = 3120164328. Its totient is φ = 1560082160.

The previous prime is 2340123223. The next prime is 2340123283. The reversal of 2340123243 is 3423210432.

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 2340123243 - 2⁶ = 2340123179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2340123223) 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, 390020538 + ... + 390020543.

It is an arithmetic number, because the mean of its divisors is an integer number (780041082).

Almost surely, 2^2340123243 is an apocalyptic number.

2340123243 is a deficient number, since it is larger than the sum of its proper divisors (780041085).

2340123243 is an equidigital number, since it uses as much as digits as its factorization.

2340123243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780041084.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 2340123243 is about 48374.8203407517. The cubic root of 2340123243 is about 1327.6377014282.

Adding to 2340123243 its reverse (3423210432), we get a palindrome (5763333675).

It can be divided in two parts, 2340123 and 243, that added together give a triangular number (2340366 = T₂₁₆₃).

The spelling of 2340123243 in words is "two billion, three hundred forty million, one hundred twenty-three thousand, two hundred forty-three".