243328801 has 9 divisors (see below), whose sum is σ = 257122803. Its totient is φ = 230241240.

The previous prime is 243328781. The next prime is 243328819. The reversal of 243328801 is 108823342.

The square root of 243328801 is 15599.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 66438801 + 176890000 = 8151^2 + 13300^2 .

It is not a de Polignac number, because 243328801 - 2¹⁵ = 243296033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243328601) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 295971 + ... + 296791.

Almost surely, 2^243328801 is an apocalyptic number.

243328801 is the 15599-th square number.

243328801 is the 7800-th centered octagonal number.

It is an amenable number.

243328801 is a deficient number, since it is larger than the sum of its proper divisors (13794002).

243328801 is an frugal number, since it uses more digits than its factorization.

243328801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680 (or 840 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The cubic root of 243328801 is about 624.3064742399.

Multiplying 243328801 by its product of nonzero digits (9216), we get a square (2242518230016 = 1497504²).

It can be divided in two parts, 24332 and 8801, that added together give a palindrome (33133).

The spelling of 243328801 in words is "two hundred forty-three million, three hundred twenty-eight thousand, eight hundred one".