243061229 has 2 divisors, whose sum is σ = 243061230. Its totient is φ = 243061228.

The previous prime is 243061201. The next prime is 243061237. The reversal of 243061229 is 922160342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136352329 + 106708900 = 11677^2 + 10330^2 .

It is a cyclic number.

It is not a de Polignac number, because 243061229 - 2²⁰ = 242012653 is a prime.

It is a super-2 number, since 2×243061229² = 118157522085980882, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243061249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121530614 + 121530615.

It is an arithmetic number, because the mean of its divisors is an integer number (121530615).

Almost surely, 2^243061229 is an apocalyptic number.

It is an amenable number.

243061229 is a deficient number, since it is larger than the sum of its proper divisors (1).

243061229 is an equidigital number, since it uses as much as digits as its factorization.

243061229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 243061229 is about 15590.4210655133. The cubic root of 243061229 is about 624.0775546344.

The spelling of 243061229 in words is "two hundred forty-three million, sixty-one thousand, two hundred twenty-nine".