243024020381 has 2 divisors, whose sum is σ = 243024020382. Its totient is φ = 243024020380.

The previous prime is 243024020363. The next prime is 243024020401. The reversal of 243024020381 is 183020420342.

243024020381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122157240100 + 120866780281 = 349510^2 + 347659^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243024020381 is a prime.

It is a super-2 number, since 2×243024020381² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243024020321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121512010190 + 121512010191.

It is an arithmetic number, because the mean of its divisors is an integer number (121512010191).

Almost surely, 2^243024020381 is an apocalyptic number.

It is an amenable number.

243024020381 is a deficient number, since it is larger than the sum of its proper divisors (1).

243024020381 is an equidigital number, since it uses as much as digits as its factorization.

243024020381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 29.

The spelling of 243024020381 in words is "two hundred forty-three billion, twenty-four million, twenty thousand, three hundred eighty-one".