243613113 has 4 divisors (see below), whose sum is σ = 324817488. Its totient is φ = 162408740.

The previous prime is 243613091. The next prime is 243613121. The reversal of 243613113 is 311316342.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 243613113 - 2⁶ = 243613049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243613133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40602183 + ... + 40602188.

It is an arithmetic number, because the mean of its divisors is an integer number (81204372).

Almost surely, 2^243613113 is an apocalyptic number.

It is an amenable number.

243613113 is a deficient number, since it is larger than the sum of its proper divisors (81204375).

243613113 is an equidigital number, since it uses as much as digits as its factorization.

243613113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81204374.

The product of its digits is 1296, while the sum is 24.

The square root of 243613113 is about 15608.1104878201. The cubic root of 243613113 is about 624.5495318302.

Adding to 243613113 its reverse (311316342), we get a palindrome (554929455).

The spelling of 243613113 in words is "two hundred forty-three million, six hundred thirteen thousand, one hundred thirteen".