243233102989 has 2 divisors, whose sum is σ = 243233102990. Its totient is φ = 243233102988.

The previous prime is 243233102977. The next prime is 243233103019. The reversal of 243233102989 is 989201332342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 234708274089 + 8524828900 = 484467^2 + 92330^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243233102989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243233102909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121616551494 + 121616551495.

It is an arithmetic number, because the mean of its divisors is an integer number (121616551495).

Almost surely, 2^243233102989 is an apocalyptic number.

It is an amenable number.

243233102989 is a deficient number, since it is larger than the sum of its proper divisors (1).

243233102989 is an equidigital number, since it uses as much as digits as its factorization.

243233102989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 46.

The spelling of 243233102989 in words is "two hundred forty-three billion, two hundred thirty-three million, one hundred two thousand, nine hundred eighty-nine".