243121241097 has 64 divisors (see below), whose sum is σ = 416445419520. Its totient is φ = 137307830400.

The previous prime is 243121241081. The next prime is 243121241123. The reversal of 243121241097 is 790142121342.

243121241097 is a `hidden beast` number, since 2 + 431 + 2 + 124 + 10 + 97 = 666.

243121241097 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243121241097 - 2⁴ = 243121241081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243121245097) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 10130322 + ... + 10154292.

It is an arithmetic number, because the mean of its divisors is an integer number (6506959680).

Almost surely, 2^243121241097 is an apocalyptic number.

243121241097 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

243121241097 is a deficient number, since it is larger than the sum of its proper divisors (173324178423).

243121241097 is a wasteful number, since it uses less digits than its factorization.

243121241097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24611 (or 24605 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 243121241097 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred forty-one thousand, ninety-seven".