213432331005 has 12 divisors (see below), whose sum is σ = 369949373820. Its totient is φ = 113830576512.

The previous prime is 213432331003. The next prime is 213432331027. The reversal of 213432331005 is 500133234312.

213432331005 is a `hidden beast` number, since 2 + 1 + 343 + 2 + 3 + 310 + 0 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 26533477881 + 186898853124 = 162891^2 + 432318^2 .

It is not a de Polignac number, because 213432331005 - 2¹ = 213432331003 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 213432331005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213432331003) 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 11 ways as a sum of consecutive naturals, for example, 2371470300 + ... + 2371470389.

It is an arithmetic number, because the mean of its divisors is an integer number (30829114485).

Almost surely, 2^213432331005 is an apocalyptic number.

It is an amenable number.

213432331005 is a deficient number, since it is larger than the sum of its proper divisors (156517042815).

213432331005 is a wasteful number, since it uses less digits than its factorization.

213432331005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4742940700 (or 4742940697 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

Adding to 213432331005 its reverse (500133234312), we get a palindrome (713565565317).

The spelling of 213432331005 in words is "two hundred thirteen billion, four hundred thirty-two million, three hundred thirty-one thousand, five".