243011316 has 24 divisors (see below), whose sum is σ = 567725760. Its totient is φ = 80903872.

The previous prime is 243011267. The next prime is 243011317. The reversal of 243011316 is 613110342.

It is a junction number, because it is equal to n+sod(n) for n = 243011292 and 243011301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243011317) 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, 2001 + ... + 22136.

It is an arithmetic number, because the mean of its divisors is an integer number (23655240).

Almost surely, 2^243011316 is an apocalyptic number.

It is an amenable number.

243011316 is an abundant number, since it is smaller than the sum of its proper divisors (324714444).

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

243011316 is a wasteful number, since it uses less digits than its factorization.

243011316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24983 (or 24981 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 243011316 is about 15588.8202247636. The cubic root of 243011316 is about 624.0348332790.

Adding to 243011316 its reverse (613110342), we get a palindrome (856121658).

The spelling of 243011316 in words is "two hundred forty-three million, eleven thousand, three hundred sixteen".