243134213 has 8 divisors (see below), whose sum is σ = 279867840. Its totient is φ = 206900640.

The previous prime is 243134191. The next prime is 243134233. The reversal of 243134213 is 312431342.

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 243134213 - 2¹⁶ = 243068677 is a prime.

It is a super-2 number, since 2×243134213² = 118228491062258738, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243134233) 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, 123968 + ... + 125913.

It is an arithmetic number, because the mean of its divisors is an integer number (34983480).

Almost surely, 2^243134213 is an apocalyptic number.

It is an amenable number.

243134213 is a deficient number, since it is larger than the sum of its proper divisors (36733627).

243134213 is a wasteful number, since it uses less digits than its factorization.

243134213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250027.

The product of its digits is 1728, while the sum is 23.

The square root of 243134213 is about 15592.7615578511. The cubic root of 243134213 is about 624.1400123100.

Adding to 243134213 its reverse (312431342), we get a palindrome (555565555).

The spelling of 243134213 in words is "two hundred forty-three million, one hundred thirty-four thousand, two hundred thirteen".