243143229 has 16 divisors (see below), whose sum is σ = 370754048. Its totient is φ = 138845232.

The previous prime is 243143227. The next prime is 243143233. The reversal of 243143229 is 922341342.

It is not a de Polignac number, because 243143229 - 2¹ = 243143227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243143196 and 243143205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243143227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38814 + ... + 44640.

It is an arithmetic number, because the mean of its divisors is an integer number (23172128).

Almost surely, 2^243143229 is an apocalyptic number.

It is an amenable number.

243143229 is a deficient number, since it is larger than the sum of its proper divisors (127610819).

243143229 is a wasteful number, since it uses less digits than its factorization.

243143229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7824.

The product of its digits is 10368, while the sum is 30.

The square root of 243143229 is about 15593.0506636771. The cubic root of 243143229 is about 624.1477270843.

The spelling of 243143229 in words is "two hundred forty-three million, one hundred forty-three thousand, two hundred twenty-nine".