12434131243 has 4 divisors (see below), whose sum is σ = 12506005008. Its totient is φ = 12362257480.

The previous prime is 12434131219. The next prime is 12434131247. The reversal of 12434131243 is 34213143421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34213143421 = 19 ⋅1800691759.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12434131243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12434131247) 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, 35936623 + ... + 35936968.

It is an arithmetic number, because the mean of its divisors is an integer number (3126501252).

Almost surely, 2^12434131243 is an apocalyptic number.

12434131243 is a deficient number, since it is larger than the sum of its proper divisors (71873765).

12434131243 is an equidigital number, since it uses as much as digits as its factorization.

12434131243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71873764.

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

Adding to 12434131243 its reverse (34213143421), we get a palindrome (46647274664).

The spelling of 12434131243 in words is "twelve billion, four hundred thirty-four million, one hundred thirty-one thousand, two hundred forty-three".