240865013 has 2 divisors, whose sum is σ = 240865014. Its totient is φ = 240865012.

The previous prime is 240865007. The next prime is 240865111. The reversal of 240865013 is 310568042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227919409 + 12945604 = 15097^2 + 3598^2 .

It is a cyclic number.

It is not a de Polignac number, because 240865013 - 2²⁴ = 224087797 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240865003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120432506 + 120432507.

It is an arithmetic number, because the mean of its divisors is an integer number (120432507).

Almost surely, 2^240865013 is an apocalyptic number.

It is an amenable number.

240865013 is a deficient number, since it is larger than the sum of its proper divisors (1).

240865013 is an equidigital number, since it uses as much as digits as its factorization.

240865013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 240865013 is about 15519.8264487719. The cubic root of 240865013 is about 622.1922161421.

The spelling of 240865013 in words is "two hundred forty million, eight hundred sixty-five thousand, thirteen".