243335401 has 4 divisors (see below), whose sum is σ = 243564100. Its totient is φ = 243106704.

The previous prime is 243335383. The next prime is 243335431. The reversal of 243335401 is 104533342.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 201072400 + 42263001 = 14180^2 + 6501^2 .

It is a cyclic number.

It is not a de Polignac number, because 243335401 - 2¹³ = 243327209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243335431) 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, 112746 + ... + 114883.

It is an arithmetic number, because the mean of its divisors is an integer number (60891025).

Almost surely, 2^243335401 is an apocalyptic number.

It is an amenable number.

243335401 is a deficient number, since it is larger than the sum of its proper divisors (228699).

243335401 is a wasteful number, since it uses less digits than its factorization.

243335401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228698.

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

The square root of 243335401 is about 15599.2115505881. The cubic root of 243335401 is about 624.3121187087.

Adding to 243335401 its reverse (104533342), we get a palindrome (347868743).

The spelling of 243335401 in words is "two hundred forty-three million, three hundred thirty-five thousand, four hundred one".