243002210401 has 4 divisors (see below), whose sum is σ = 243406540804. Its totient is φ = 242597880000.

The previous prime is 243002210377. The next prime is 243002210449. The reversal of 243002210401 is 104012200342.

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 229801349376 + 13200861025 = 479376^2 + 114895^2 .

It is a cyclic number.

It is not a de Polignac number, because 243002210401 - 2²¹ = 243000113249 is a prime.

It is a super-3 number, since 3×243002210401³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243002210491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202164300 + ... + 202165501.

It is an arithmetic number, because the mean of its divisors is an integer number (60851635201).

Almost surely, 2^243002210401 is an apocalyptic number.

It is an amenable number.

243002210401 is a deficient number, since it is larger than the sum of its proper divisors (404330403).

243002210401 is an equidigital number, since it uses as much as digits as its factorization.

243002210401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404330402.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 243002210401 its reverse (104012200342), we get a palindrome (347014410743).

The spelling of 243002210401 in words is "two hundred forty-three billion, two million, two hundred ten thousand, four hundred one".