243430000237 has 2 divisors, whose sum is σ = 243430000238. Its totient is φ = 243430000236.

The previous prime is 243430000211. The next prime is 243430000397. The reversal of 243430000237 is 732000034342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 216503159401 + 26926840836 = 465299^2 + 164094^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243430000237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243430000537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121715000118 + 121715000119.

It is an arithmetic number, because the mean of its divisors is an integer number (121715000119).

Almost surely, 2^243430000237 is an apocalyptic number.

It is an amenable number.

243430000237 is a deficient number, since it is larger than the sum of its proper divisors (1).

243430000237 is an equidigital number, since it uses as much as digits as its factorization.

243430000237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 28.

Adding to 243430000237 its reverse (732000034342), we get a palindrome (975430034579).

The spelling of 243430000237 in words is "two hundred forty-three billion, four hundred thirty million, two hundred thirty-seven", and thus it is an aban number.