240523256243 has 2 divisors, whose sum is σ = 240523256244. Its totient is φ = 240523256242.

The previous prime is 240523256209. The next prime is 240523256273. The reversal of 240523256243 is 342652325042.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240523256243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 240523256197 and 240523256206.

It is not a weakly prime, because it can be changed into another prime (240523256273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120261628121 + 120261628122.

It is an arithmetic number, because the mean of its divisors is an integer number (120261628122).

Almost surely, 2^240523256243 is an apocalyptic number.

240523256243 is a deficient number, since it is larger than the sum of its proper divisors (1).

240523256243 is an equidigital number, since it uses as much as digits as its factorization.

240523256243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 345600, while the sum is 38.

The spelling of 240523256243 in words is "two hundred forty billion, five hundred twenty-three million, two hundred fifty-six thousand, two hundred forty-three".