243115134 has 64 divisors (see below), whose sum is σ = 512967168. Its totient is φ = 76752000.

The previous prime is 243115133. The next prime is 243115141. The reversal of 243115134 is 431511342.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243115133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1609959 + ... + 1610109.

It is an arithmetic number, because the mean of its divisors is an integer number (8015112).

Almost surely, 2^243115134 is an apocalyptic number.

243115134 is an abundant number, since it is smaller than the sum of its proper divisors (269852034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243115134 is a wasteful number, since it uses less digits than its factorization.

243115134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353.

The product of its digits is 1440, while the sum is 24.

The square root of 243115134 is about 15592.1497555661. The cubic root of 243115134 is about 624.1236862396.

Adding to 243115134 its reverse (431511342), we get a palindrome (674626476).

The spelling of 243115134 in words is "two hundred forty-three million, one hundred fifteen thousand, one hundred thirty-four".