213431535556216 has 32 divisors (see below), whose sum is σ = 400600778862960. Its totient is φ = 106604672562432.

The previous prime is 213431535556207. The next prime is 213431535556237. The reversal of 213431535556216 is 612655535134312.

It is a happy number.

213431535556216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151597771 + ... + 152999173.

Almost surely, 2^{213431535556216} is an apocalyptic number.

It is an amenable number.

213431535556216 is a deficient number, since it is larger than the sum of its proper divisors (187169243306744).

213431535556216 is a wasteful number, since it uses less digits than its factorization.

213431535556216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421215 (or 1421211 counting only the distinct ones).

The product of its digits is 9720000, while the sum is 52.

The spelling of 213431535556216 in words is "two hundred thirteen trillion, four hundred thirty-one billion, five hundred thirty-five million, five hundred fifty-six thousand, two hundred sixteen".