243208461 has 8 divisors (see below), whose sum is σ = 325512000. Its totient is φ = 161521952.

The previous prime is 243208457. The next prime is 243208501. The reversal of 243208461 is 164802342.

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 243208461 - 2² = 243208457 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243208411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153336 + ... + 154913.

It is an arithmetic number, because the mean of its divisors is an integer number (40689000).

Almost surely, 2^243208461 is an apocalyptic number.

It is an amenable number.

243208461 is a deficient number, since it is larger than the sum of its proper divisors (82303539).

243208461 is a wasteful number, since it uses less digits than its factorization.

243208461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308515.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 243208461 is about 15595.1422244236. The cubic root of 243208461 is about 624.2035388572.

The spelling of 243208461 in words is "two hundred forty-three million, two hundred eight thousand, four hundred sixty-one".