243134731 has 8 divisors (see below), whose sum is σ = 294213600. Its totient is φ = 196142208.

The previous prime is 243134729. The next prime is 243134747. The reversal of 243134731 is 137431342.

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 243134731 - 2¹ = 243134729 is a prime.

It is a super-2 number, since 2×243134731² = 118228994836884722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243134731.

It is not an unprimeable number, because it can be changed into a prime (243134711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1021456 + ... + 1021693.

It is an arithmetic number, because the mean of its divisors is an integer number (36776700).

Almost surely, 2^243134731 is an apocalyptic number.

243134731 is a deficient number, since it is larger than the sum of its proper divisors (51078869).

243134731 is a wasteful number, since it uses less digits than its factorization.

243134731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2043173.

The product of its digits is 6048, while the sum is 28.

The square root of 243134731 is about 15592.7781681136. The cubic root of 243134731 is about 624.1404555553.

The spelling of 243134731 in words is "two hundred forty-three million, one hundred thirty-four thousand, seven hundred thirty-one".