243227313 has 96 divisors (see below), whose sum is σ = 450725120. Its totient is φ = 126904320.

The previous prime is 243227297. The next prime is 243227339. The reversal of 243227313 is 313722342.

243227313 is a `hidden beast` number, since 24 + 322 + 7 + 313 = 666.

It is not a de Polignac number, because 243227313 - 2⁴ = 243227297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243227213) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3331845 + ... + 3331917.

Almost surely, 2^243227313 is an apocalyptic number.

It is an amenable number.

243227313 is a deficient number, since it is larger than the sum of its proper divisors (207497807).

243227313 is a wasteful number, since it uses less digits than its factorization.

243227313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 161 counting only the distinct ones).

The product of its digits is 6048, while the sum is 27.

The square root of 243227313 is about 15595.7466316942. The cubic root of 243227313 is about 624.2196665597.

Adding to 243227313 its reverse (313722342), we get a palindrome (556949655).

The spelling of 243227313 in words is "two hundred forty-three million, two hundred twenty-seven thousand, three hundred thirteen".