12431332005 has 8 divisors (see below), whose sum is σ = 19890131232. Its totient is φ = 6630043728.

The previous prime is 12431332003. The next prime is 12431332021. The reversal of 12431332005 is 50023313421.

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

It is not a de Polignac number, because 12431332005 - 2¹ = 12431332003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12431332003) 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, 414377719 + ... + 414377748.

It is an arithmetic number, because the mean of its divisors is an integer number (2486266404).

Almost surely, 2^12431332005 is an apocalyptic number.

12431332005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12431332005 is a deficient number, since it is larger than the sum of its proper divisors (7458799227).

12431332005 is an equidigital number, since it uses as much as digits as its factorization.

12431332005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828755475.

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 12431332005 its reverse (50023313421), we get a palindrome (62454645426).

The spelling of 12431332005 in words is "twelve billion, four hundred thirty-one million, three hundred thirty-two thousand, five".