213310655 has 4 divisors (see below), whose sum is σ = 255972792. Its totient is φ = 170648520.

The previous prime is 213310627. The next prime is 213310673. The reversal of 213310655 is 556013312.

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

It is not a de Polignac number, because 213310655 - 2²⁰ = 212262079 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 (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21331061 + ... + 21331070.

It is an arithmetic number, because the mean of its divisors is an integer number (63993198).

Almost surely, 2^213310655 is an apocalyptic number.

213310655 is a deficient number, since it is larger than the sum of its proper divisors (42662137).

213310655 is an equidigital number, since it uses as much as digits as its factorization.

213310655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42662136.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 213310655 is about 14605.1585065004. The cubic root of 213310655 is about 597.4994590426.

Adding to 213310655 its reverse (556013312), we get a palindrome (769323967).

The spelling of 213310655 in words is "two hundred thirteen million, three hundred ten thousand, six hundred fifty-five".