2005431324011 has 4 divisors (see below), whose sum is σ = 2005434195024. Its totient is φ = 2005428453000.

The previous prime is 2005431323999. The next prime is 2005431324047. The reversal of 2005431324011 is 1104231345002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2005431324011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2005431321011) 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, 365186 + ... + 2035736.

It is an arithmetic number, because the mean of its divisors is an integer number (501358548756).

Almost surely, 2^{2005431324011} is an apocalyptic number.

2005431324011 is a deficient number, since it is larger than the sum of its proper divisors (2871013).

2005431324011 is a wasteful number, since it uses less digits than its factorization.

2005431324011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871012.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 2005431324011 its reverse (1104231345002), we get a palindrome (3109662669013).

The spelling of 2005431324011 in words is "two trillion, five billion, four hundred thirty-one million, three hundred twenty-four thousand, eleven".