207244813 has 2 divisors, whose sum is σ = 207244814. Its totient is φ = 207244812.

The previous prime is 207244783. The next prime is 207244847. The reversal of 207244813 is 318442702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192598884 + 14645929 = 13878^2 + 3827^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-207244813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (207244853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103622406 + 103622407.

It is an arithmetic number, because the mean of its divisors is an integer number (103622407).

Almost surely, 2^207244813 is an apocalyptic number.

It is an amenable number.

207244813 is a deficient number, since it is larger than the sum of its proper divisors (1).

207244813 is an equidigital number, since it uses as much as digits as its factorization.

207244813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 207244813 is about 14395.9998958044. Note that the first 3 decimals coincide. The cubic root of 207244813 is about 591.7812804832.

The spelling of 207244813 in words is "two hundred seven million, two hundred forty-four thousand, eight hundred thirteen".