243112043 has 2 divisors, whose sum is σ = 243112044. Its totient is φ = 243112042.

The previous prime is 243112039. The next prime is 243112061. The reversal of 243112043 is 340211342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243112043 - 2² = 243112039 is a prime.

It is not a weakly prime, because it can be changed into another prime (243112073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121556021 + 121556022.

It is an arithmetic number, because the mean of its divisors is an integer number (121556022).

Almost surely, 2^243112043 is an apocalyptic number.

243112043 is a deficient number, since it is larger than the sum of its proper divisors (1).

243112043 is an equidigital number, since it uses as much as digits as its factorization.

243112043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 243112043 is about 15592.0506348588. The cubic root of 243112043 is about 624.1210411630.

Adding to 243112043 its reverse (340211342), we get a palindrome (583323385).

The spelling of 243112043 in words is "two hundred forty-three million, one hundred twelve thousand, forty-three".