241978013 has 2 divisors, whose sum is σ = 241978014. Its totient is φ = 241978012.

The previous prime is 241978007. The next prime is 241978049. The reversal of 241978013 is 310879142.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121044004 + 120934009 = 11002^2 + 10997^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-241978013 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 (241978073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120989006 + 120989007.

It is an arithmetic number, because the mean of its divisors is an integer number (120989007).

Almost surely, 2^241978013 is an apocalyptic number.

It is an amenable number.

241978013 is a deficient number, since it is larger than the sum of its proper divisors (1).

241978013 is an equidigital number, since it uses as much as digits as its factorization.

241978013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 241978013 is about 15555.6424811063. The cubic root of 241978013 is about 623.1490951462.

The spelling of 241978013 in words is "two hundred forty-one million, nine hundred seventy-eight thousand, thirteen".