243464261 has 2 divisors, whose sum is σ = 243464262. Its totient is φ = 243464260.

The previous prime is 243464239. The next prime is 243464311. The reversal of 243464261 is 162464342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185232100 + 58232161 = 13610^2 + 7631^2 .

It is a cyclic number.

It is not a de Polignac number, because 243464261 - 2¹⁰ = 243463237 is a prime.

It is a super-2 number, since 2×243464261² = 118549692768552242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243464231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121732130 + 121732131.

It is an arithmetic number, because the mean of its divisors is an integer number (121732131).

Almost surely, 2^243464261 is an apocalyptic number.

It is an amenable number.

243464261 is a deficient number, since it is larger than the sum of its proper divisors (1).

243464261 is an equidigital number, since it uses as much as digits as its factorization.

243464261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 32.

The square root of 243464261 is about 15603.3413408795. The cubic root of 243464261 is about 624.4223022423.

The spelling of 243464261 in words is "two hundred forty-three million, four hundred sixty-four thousand, two hundred sixty-one".