12143547231 has 8 divisors (see below), whose sum is σ = 16193149440. Its totient is φ = 8094821592.

The previous prime is 12143547217. The next prime is 12143547259. The reversal of 12143547231 is 13274534121.

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

It is a de Polignac number, because none of the positive numbers 2^k-12143547231 is a prime.

It is a super-2 number, since 2×12143547231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12143547192 and 12143547201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12143547631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186105 + ... + 242738.

It is an arithmetic number, because the mean of its divisors is an integer number (2024143680).

Almost surely, 2^12143547231 is an apocalyptic number.

12143547231 is a deficient number, since it is larger than the sum of its proper divisors (4049602209).

12143547231 is an equidigital number, since it uses as much as digits as its factorization.

12143547231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438285.

The product of its digits is 20160, while the sum is 33.

The spelling of 12143547231 in words is "twelve billion, one hundred forty-three million, five hundred forty-seven thousand, two hundred thirty-one".