243270901 has 8 divisors (see below), whose sum is σ = 262441944. Its totient is φ = 224640000.

The previous prime is 243270899. The next prime is 243270949. The reversal of 243270901 is 109072342.

It can be written as a sum of positive squares in 4 ways, for example, as 90155025 + 153115876 = 9495^2 + 12374^2 .

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 243270901 - 2¹ = 243270899 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 243270901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243270961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134100 + ... + 135901.

It is an arithmetic number, because the mean of its divisors is an integer number (32805243).

Almost surely, 2^243270901 is an apocalyptic number.

243270901 is the 9865-th centered pentagonal number.

It is an amenable number.

243270901 is a deficient number, since it is larger than the sum of its proper divisors (19171043).

243270901 is a wasteful number, since it uses less digits than its factorization.

243270901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270071.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 243270901 is about 15597.1440013869. The cubic root of 243270901 is about 624.2569524787.

The spelling of 243270901 in words is "two hundred forty-three million, two hundred seventy thousand, nine hundred one".