243043153 has 4 divisors (see below), whose sum is σ = 246466368. Its totient is φ = 239619940.

The previous prime is 243043133. The next prime is 243043183. The reversal of 243043153 is 351340342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 351340342 = 2 ⋅175670171.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243043153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243043123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1711501 + ... + 1711642.

It is an arithmetic number, because the mean of its divisors is an integer number (61616592).

Almost surely, 2^243043153 is an apocalyptic number.

It is an amenable number.

243043153 is a deficient number, since it is larger than the sum of its proper divisors (3423215).

243043153 is an equidigital number, since it uses as much as digits as its factorization.

243043153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3423214.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 243043153 is about 15589.8413397956. The cubic root of 243043153 is about 624.0620837651.

Adding to 243043153 its reverse (351340342), we get a palindrome (594383495).

The spelling of 243043153 in words is "two hundred forty-three million, forty-three thousand, one hundred fifty-three".