213246636506311 has 4 divisors (see below), whose sum is σ = 213247097299872. Its totient is φ = 213246175712752.

The previous prime is 213246636506291. The next prime is 213246636506359. The reversal of 213246636506311 is 113605636642312.

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

It is a cyclic number.

It is not a de Polignac number, because 213246636506311 - 2¹¹ = 213246636504263 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213246636206311) 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, 229701910 + ... + 230628403.

It is an arithmetic number, because the mean of its divisors is an integer number (53311774324968).

Almost surely, 2^{213246636506311} is an apocalyptic number.

213246636506311 is a deficient number, since it is larger than the sum of its proper divisors (460793561).

213246636506311 is an equidigital number, since it uses as much as digits as its factorization.

213246636506311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460793560.

The product of its (nonzero) digits is 2799360, while the sum is 49.

The spelling of 213246636506311 in words is "two hundred thirteen trillion, two hundred forty-six billion, six hundred thirty-six million, five hundred six thousand, three hundred eleven".