243252413 has 2 divisors, whose sum is σ = 243252414. Its totient is φ = 243252412.

The previous prime is 243252403. The next prime is 243252431. The reversal of 243252413 is 314252342.

Together with next prime (243252431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204289849 + 38962564 = 14293^2 + 6242^2 .

It is a cyclic number.

It is not a de Polignac number, because 243252413 - 2⁶ = 243252349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243252403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121626206 + 121626207.

It is an arithmetic number, because the mean of its divisors is an integer number (121626207).

Almost surely, 2^243252413 is an apocalyptic number.

It is an amenable number.

243252413 is a deficient number, since it is larger than the sum of its proper divisors (1).

243252413 is an equidigital number, since it uses as much as digits as its factorization.

243252413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 26.

The square root of 243252413 is about 15596.5513175189. The cubic root of 243252413 is about 624.2411380720.

It can be divided in two parts, 2432 and 52413, that added together give a palindrome (54845).

The spelling of 243252413 in words is "two hundred forty-three million, two hundred fifty-two thousand, four hundred thirteen".