243132331121 has 8 divisors (see below), whose sum is σ = 247113232704. Its totient is φ = 239161784400.

The previous prime is 243132331111. The next prime is 243132331133. The reversal of 243132331121 is 121133231342.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243132331121 is a prime.

It is a super-2 number, since 2×243132331121² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243132331111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2541365 + ... + 2635298.

It is an arithmetic number, because the mean of its divisors is an integer number (30889154088).

Almost surely, 2^243132331121 is an apocalyptic number.

It is an amenable number.

243132331121 is a deficient number, since it is larger than the sum of its proper divisors (3980901583).

243132331121 is an equidigital number, since it uses as much as digits as its factorization.

243132331121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5177431.

The product of its digits is 2592, while the sum is 26.

Adding to 243132331121 its reverse (121133231342), we get a palindrome (364265562463).

The spelling of 243132331121 in words is "two hundred forty-three billion, one hundred thirty-two million, three hundred thirty-one thousand, one hundred twenty-one".