243102021233 has 4 divisors (see below), whose sum is σ = 243108463860. Its totient is φ = 243095578608.

The previous prime is 243102021223. The next prime is 243102021241. The reversal of 243102021233 is 332120201342.

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 4985348449 + 238116672784 = 70607^2 + 487972^2 .

It is a cyclic number.

It is not a de Polignac number, because 243102021233 - 2¹⁰ = 243102020209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243102021199 and 243102021208.

It is not an unprimeable number, because it can be changed into a prime (243102021223) 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, 3164378 + ... + 3240291.

It is an arithmetic number, because the mean of its divisors is an integer number (60777115965).

Almost surely, 2^243102021233 is an apocalyptic number.

It is an amenable number.

243102021233 is a deficient number, since it is larger than the sum of its proper divisors (6442627).

243102021233 is an equidigital number, since it uses as much as digits as its factorization.

243102021233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6442626.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 243102021233 its reverse (332120201342), we get a palindrome (575222222575).

The spelling of 243102021233 in words is "two hundred forty-three billion, one hundred two million, twenty-one thousand, two hundred thirty-three".