243113405 has 8 divisors (see below), whose sum is σ = 292578912. Its totient is φ = 193928848.

The previous prime is 243113393. The next prime is 243113407. The reversal of 243113405 is 504311342.

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 243113405 - 2⁴ = 243113389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243113407) 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, 68327 + ... + 71796.

It is an arithmetic number, because the mean of its divisors is an integer number (36572364).

Almost surely, 2^243113405 is an apocalyptic number.

It is an amenable number.

243113405 is a deficient number, since it is larger than the sum of its proper divisors (49465507).

243113405 is a wasteful number, since it uses less digits than its factorization.

243113405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140475.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 243113405 is about 15592.0943109000. The cubic root of 243113405 is about 624.1222066767.

Adding to 243113405 its reverse (504311342), we get a palindrome (747424747).

The spelling of 243113405 in words is "two hundred forty-three million, one hundred thirteen thousand, four hundred five".