12331145005 has 4 divisors (see below), whose sum is σ = 14797374012. Its totient is φ = 9864916000.

The previous prime is 12331145003. The next prime is 12331145009. The reversal of 12331145005 is 50054113321.

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: 50054113321 = 43 ⋅1164049147.

It can be written as a sum of positive squares in 2 ways, for example, as 8013472324 + 4317672681 = 89518^2 + 65709^2 .

It is not a de Polignac number, because 12331145005 - 2¹ = 12331145003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12331145003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1233114496 + ... + 1233114505.

It is an arithmetic number, because the mean of its divisors is an integer number (3699343503).

Almost surely, 2^12331145005 is an apocalyptic number.

It is an amenable number.

12331145005 is a deficient number, since it is larger than the sum of its proper divisors (2466229007).

12331145005 is an equidigital number, since it uses as much as digits as its factorization.

12331145005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2466229006.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 12331145005 its reverse (50054113321), we get a palindrome (62385258326).

The spelling of 12331145005 in words is "twelve billion, three hundred thirty-one million, one hundred forty-five thousand, five".