243153263 has 6 divisors (see below), whose sum is σ = 254185344. Its totient is φ = 232580876.

The previous prime is 243153257. The next prime is 243153271. The reversal of 243153263 is 362351342.

It is not a de Polignac number, because 243153263 - 2⁶ = 243153199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243153223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 229295 + ... + 230352.

It is an arithmetic number, because the mean of its divisors is an integer number (42364224).

Almost surely, 2^243153263 is an apocalyptic number.

243153263 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

243153263 is a deficient number, since it is larger than the sum of its proper divisors (11032081).

243153263 is an equidigital number, since it uses as much as digits as its factorization.

243153263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459693 (or 459670 counting only the distinct ones).

The product of its digits is 12960, while the sum is 29.

The square root of 243153263 is about 15593.3724062500. The cubic root of 243153263 is about 624.1563127126.

The spelling of 243153263 in words is "two hundred forty-three million, one hundred fifty-three thousand, two hundred sixty-three".