213310105 has 4 divisors (see below), whose sum is σ = 255972132. Its totient is φ = 170648080.

The previous prime is 213310103. The next prime is 213310117. The reversal of 213310105 is 501013312.

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 50083929 + 163226176 = 7077^2 + 12776^2 .

It is not a de Polignac number, because 213310105 - 2¹ = 213310103 is a prime.

It is a super-2 number, since 2×213310105² = 91002401790222050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213310103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21331006 + ... + 21331015.

It is an arithmetic number, because the mean of its divisors is an integer number (63993033).

Almost surely, 2^213310105 is an apocalyptic number.

It is an amenable number.

213310105 is a deficient number, since it is larger than the sum of its proper divisors (42662027).

213310105 is an equidigital number, since it uses as much as digits as its factorization.

213310105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42662026.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 213310105 is about 14605.1396775245. The cubic root of 213310105 is about 597.4989455115.

Adding to 213310105 its reverse (501013312), we get a palindrome (714323417).

The spelling of 213310105 in words is "two hundred thirteen million, three hundred ten thousand, one hundred five".