240431563 has 2 divisors, whose sum is σ = 240431564. Its totient is φ = 240431562.

The previous prime is 240431539. The next prime is 240431591. The reversal of 240431563 is 365134042.

It is an a-pointer prime, because the next prime (240431591) can be obtained adding 240431563 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240431563 is a prime.

It is not a weakly prime, because it can be changed into another prime (240431593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120215781 + 120215782.

It is an arithmetic number, because the mean of its divisors is an integer number (120215782).

Almost surely, 2^240431563 is an apocalyptic number.

240431563 is a deficient number, since it is larger than the sum of its proper divisors (1).

240431563 is an equidigital number, since it uses as much as digits as its factorization.

240431563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 240431563 is about 15505.8557648393. The cubic root of 240431563 is about 621.8187688624.

The spelling of 240431563 in words is "two hundred forty million, four hundred thirty-one thousand, five hundred sixty-three".