240343656263 has 2 divisors, whose sum is σ = 240343656264. Its totient is φ = 240343656262.

The previous prime is 240343656253. The next prime is 240343656283. The reversal of 240343656263 is 362656343042.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 240343656263 - 2¹² = 240343652167 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240343656253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120171828131 + 120171828132.

It is an arithmetic number, because the mean of its divisors is an integer number (120171828132).

Almost surely, 2^240343656263 is an apocalyptic number.

240343656263 is a deficient number, since it is larger than the sum of its proper divisors (1).

240343656263 is an equidigital number, since it uses as much as digits as its factorization.

240343656263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1866240, while the sum is 44.

The spelling of 240343656263 in words is "two hundred forty billion, three hundred forty-three million, six hundred fifty-six thousand, two hundred sixty-three".