213432012005 has 4 divisors (see below), whose sum is σ = 256118414412. Its totient is φ = 170745609600.

The previous prime is 213432011981. The next prime is 213432012049. The reversal of 213432012005 is 500210234312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 167051220961 + 46380791044 = 408719^2 + 215362^2 .

It is not a de Polignac number, because 213432012005 - 2¹² = 213432007909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21343201196 + ... + 21343201205.

It is an arithmetic number, because the mean of its divisors is an integer number (64029603603).

Almost surely, 2^213432012005 is an apocalyptic number.

It is an amenable number.

213432012005 is a deficient number, since it is larger than the sum of its proper divisors (42686402407).

213432012005 is an equidigital number, since it uses as much as digits as its factorization.

213432012005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42686402406.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 213432012005 its reverse (500210234312), we get a palindrome (713642246317).

The spelling of 213432012005 in words is "two hundred thirteen billion, four hundred thirty-two million, twelve thousand, five".