243223761 has 8 divisors (see below), whose sum is σ = 353780064. Its totient is φ = 147408320.

The previous prime is 243223753. The next prime is 243223787. The reversal of 243223761 is 167322342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243223761 - 2³ = 243223753 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (243223661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3685176 + ... + 3685241.

It is an arithmetic number, because the mean of its divisors is an integer number (44222508).

Almost surely, 2^243223761 is an apocalyptic number.

It is an amenable number.

243223761 is a deficient number, since it is larger than the sum of its proper divisors (110556303).

243223761 is a wasteful number, since it uses less digits than its factorization.

243223761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7370431.

The product of its digits is 12096, while the sum is 30.

The square root of 243223761 is about 15595.6327540757. The cubic root of 243223761 is about 624.2166279220.

The spelling of 243223761 in words is "two hundred forty-three million, two hundred twenty-three thousand, seven hundred sixty-one".