243403193 has 8 divisors (see below), whose sum is σ = 265645056. Its totient is φ = 221180400.

The previous prime is 243403169. The next prime is 243403207. The reversal of 243403193 is 391304342.

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 243403193 - 2¹⁴ = 243386809 is a prime.

It is a super-2 number, since 2×243403193² = 118490228725190498, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (243405193) 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, 41480 + ... + 46982.

It is an arithmetic number, because the mean of its divisors is an integer number (33205632).

Almost surely, 2^243403193 is an apocalyptic number.

It is an amenable number.

243403193 is a deficient number, since it is larger than the sum of its proper divisors (22241863).

243403193 is a wasteful number, since it uses less digits than its factorization.

243403193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9535.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 243403193 is about 15601.3843296036. The cubic root of 243403193 is about 624.3700900481.

The spelling of 243403193 in words is "two hundred forty-three million, four hundred three thousand, one hundred ninety-three".