12432143431 has 4 divisors (see below), whose sum is σ = 12434744200. Its totient is φ = 12429542664.

The previous prime is 12432143417. The next prime is 12432143453. The reversal of 12432143431 is 13434123421.

It is a happy number.

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 12432143431 - 2⁷ = 12432143303 is a prime.

It is a super-2 number, since 2×12432143431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12432143431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12432141431) 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, 1293201 + ... + 1302778.

It is an arithmetic number, because the mean of its divisors is an integer number (3108686050).

Almost surely, 2^12432143431 is an apocalyptic number.

12432143431 is a deficient number, since it is larger than the sum of its proper divisors (2600769).

12432143431 is an equidigital number, since it uses as much as digits as its factorization.

12432143431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2600768.

The product of its digits is 6912, while the sum is 28.

Adding to 12432143431 its reverse (13434123421), we get a palindrome (25866266852).

The spelling of 12432143431 in words is "twelve billion, four hundred thirty-two million, one hundred forty-three thousand, four hundred thirty-one".