243163105 has 4 divisors (see below), whose sum is σ = 291795732. Its totient is φ = 194530480.

The previous prime is 243163103. The next prime is 243163111. The reversal of 243163105 is 501361342.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 501361342 = 2 ⋅250680671.

It can be written as a sum of positive squares in 2 ways, for example, as 26749584 + 216413521 = 5172^2 + 14711^2 .

It is not a de Polignac number, because 243163105 - 2¹ = 243163103 is a prime.

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 243163105.

It is not an unprimeable number, because it can be changed into a prime (243163103) 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 3 ways as a sum of consecutive naturals, for example, 24316306 + ... + 24316315.

It is an arithmetic number, because the mean of its divisors is an integer number (72948933).

Almost surely, 2^243163105 is an apocalyptic number.

It is an amenable number.

243163105 is a deficient number, since it is larger than the sum of its proper divisors (48632627).

243163105 is an equidigital number, since it uses as much as digits as its factorization.

243163105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48632626.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 243163105 is about 15593.6879858486. The cubic root of 243163105 is about 624.1647338259.

It can be divided in two parts, 2431 and 63105, that added together give a 16-th power (65536 = 2¹⁶).

The spelling of 243163105 in words is "two hundred forty-three million, one hundred sixty-three thousand, one hundred five".