12434831905 has 8 divisors (see below), whose sum is σ = 14954169384. Its totient is φ = 9926284800.

The previous prime is 12434831897. The next prime is 12434831909. The reversal of 12434831905 is 50913843421.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3676118161 + 8758713744 = 60631^2 + 93588^2 .

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

It is not a de Polignac number, because 12434831905 - 2³ = 12434831897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12434831909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2695056 + ... + 2699665.

It is an arithmetic number, because the mean of its divisors is an integer number (1869271173).

Almost surely, 2^12434831905 is an apocalyptic number.

It is an amenable number.

12434831905 is a deficient number, since it is larger than the sum of its proper divisors (2519337479).

12434831905 is an equidigital number, since it uses as much as digits as its factorization.

12434831905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5395187.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 12434831905 in words is "twelve billion, four hundred thirty-four million, eight hundred thirty-one thousand, nine hundred five".