12443234231 has 4 divisors (see below), whose sum is σ = 12443627592. Its totient is φ = 12442840872.

The previous prime is 12443234191. The next prime is 12443234249. The reversal of 12443234231 is 13243234421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12443234231 - 2¹⁰ = 12443233207 is a prime.

It is a super-2 number, since 2×12443234231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12443234194 and 12443234203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12443234281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144641 + ... + 214026.

It is an arithmetic number, because the mean of its divisors is an integer number (3110906898).

Almost surely, 2^12443234231 is an apocalyptic number.

12443234231 is a deficient number, since it is larger than the sum of its proper divisors (393361).

12443234231 is an equidigital number, since it uses as much as digits as its factorization.

12443234231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393360.

The product of its digits is 13824, while the sum is 29.

Adding to 12443234231 its reverse (13243234421), we get a palindrome (25686468652).

The spelling of 12443234231 in words is "twelve billion, four hundred forty-three million, two hundred thirty-four thousand, two hundred thirty-one".