243132231123 has 24 divisors (see below), whose sum is σ = 383366401600. Its totient is φ = 153557195688.

The previous prime is 243132231103. The next prime is 243132231137. The reversal of 243132231123 is 321132231342.

243132231123 is a `hidden beast` number, since 2 + 4 + 3 + 1 + 322 + 311 + 23 = 666.

It is not a de Polignac number, because 243132231123 - 2²² = 243128036819 is a prime.

It is a super-2 number, since 2×243132231123² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243132231103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26325493 + ... + 26334726.

Almost surely, 2^243132231123 is an apocalyptic number.

243132231123 is a deficient number, since it is larger than the sum of its proper divisors (140234170477).

243132231123 is an equidigital number, since it uses as much as digits as its factorization.

243132231123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52660253 (or 52660241 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

Adding to 243132231123 its reverse (321132231342), we get a palindrome (564264462465).

The spelling of 243132231123 in words is "two hundred forty-three billion, one hundred thirty-two million, two hundred thirty-one thousand, one hundred twenty-three".