243561234 has 32 divisors (see below), whose sum is σ = 574672896. Its totient is φ = 67343760.

The previous prime is 243561233. The next prime is 243561251. The reversal of 243561234 is 432165342.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (243561233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92232 + ... + 94835.

It is an arithmetic number, because the mean of its divisors is an integer number (17958528).

Almost surely, 2^243561234 is an apocalyptic number.

243561234 is an abundant number, since it is smaller than the sum of its proper divisors (331111662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243561234 is a wasteful number, since it uses less digits than its factorization.

243561234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187110.

The product of its digits is 17280, while the sum is 30.

The square root of 243561234 is about 15606.4484749093. The cubic root of 243561234 is about 624.5051947184.

The spelling of 243561234 in words is "two hundred forty-three million, five hundred sixty-one thousand, two hundred thirty-four".