243065331 has 12 divisors (see below), whose sum is σ = 351731952. Its totient is φ = 161749296.

The previous prime is 243065323. The next prime is 243065377. The reversal of 243065331 is 133560342.

It is a happy number.

243065331 is a `hidden beast` number, since 2 + 4 + 3 + 0 + 653 + 3 + 1 = 666.

It is not a de Polignac number, because 243065331 - 2³ = 243065323 is a prime.

It is a super-2 number, since 2×243065331² = 118161510268279122, which contains 22 as substring.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 243065295 and 243065304.

It is not an unprimeable number, because it can be changed into a prime (243065831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19231 + ... + 29256.

It is an arithmetic number, because the mean of its divisors is an integer number (29310996).

Almost surely, 2^243065331 is an apocalyptic number.

243065331 is a deficient number, since it is larger than the sum of its proper divisors (108666621).

243065331 is a wasteful number, since it uses less digits than its factorization.

243065331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49050 (or 49047 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 243065331 is about 15590.5526200966. The cubic root of 243065331 is about 624.0810653434.

The spelling of 243065331 in words is "two hundred forty-three million, sixty-five thousand, three hundred thirty-one".