243131324101 has 8 divisors (see below), whose sum is σ = 256086407520. Its totient is φ = 230192110512.

The previous prime is 243131324039. The next prime is 243131324141. The reversal of 243131324101 is 101423131342.

243131324101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243131324101 - 2²⁵ = 243097769669 is a prime.

It is a super-2 number, since 2×243131324101² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243131324141) 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 7 ways as a sum of consecutive naturals, for example, 3935995 + ... + 3997288.

It is an arithmetic number, because the mean of its divisors is an integer number (32010800940).

Almost surely, 2^243131324101 is an apocalyptic number.

It is an amenable number.

243131324101 is a deficient number, since it is larger than the sum of its proper divisors (12955083419).

243131324101 is a wasteful number, since it uses less digits than its factorization.

243131324101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7934915.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 243131324101 its reverse (101423131342), we get a palindrome (344554455443).

The spelling of 243131324101 in words is "two hundred forty-three billion, one hundred thirty-one million, three hundred twenty-four thousand, one hundred one".