213431535556217 has 8 divisors (see below), whose sum is σ = 233231053884192. Its totient is φ = 193698125804800.

The previous prime is 213431535556207. The next prime is 213431535556237. The reversal of 213431535556217 is 712655535134312.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 213431535556217 - 2⁶ = 213431535556153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213431535556207) 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, 16527137384 + ... + 16527150297.

It is an arithmetic number, because the mean of its divisors is an integer number (29153881735524).

Almost surely, 2^{213431535556217} is an apocalyptic number.

It is an amenable number.

213431535556217 is a deficient number, since it is larger than the sum of its proper divisors (19799518327975).

213431535556217 is a wasteful number, since it uses less digits than its factorization.

213431535556217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33054288279.

The product of its digits is 11340000, while the sum is 53.

The spelling of 213431535556217 in words is "two hundred thirteen trillion, four hundred thirty-one billion, five hundred thirty-five million, five hundred fifty-six thousand, two hundred seventeen".