243121355432 has 32 divisors (see below), whose sum is σ = 458106424320. Its totient is φ = 120959879040.

The previous prime is 243121355429. The next prime is 243121355441. The reversal of 243121355432 is 234553121342.

243121355432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 243121355392 and 243121355401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10482713 + ... + 10505879.

It is an arithmetic number, because the mean of its divisors is an integer number (14315825760).

Almost surely, 2^243121355432 is an apocalyptic number.

It is an amenable number.

243121355432 is a deficient number, since it is larger than the sum of its proper divisors (214985068888).

243121355432 is a wasteful number, since it uses less digits than its factorization.

243121355432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29601 (or 29597 counting only the distinct ones).

The product of its digits is 86400, while the sum is 35.

Adding to 243121355432 its reverse (234553121342), we get a palindrome (477674476774).

The spelling of 243121355432 in words is "two hundred forty-three billion, one hundred twenty-one million, three hundred fifty-five thousand, four hundred thirty-two".