213250105 has 4 divisors (see below), whose sum is σ = 255900132. Its totient is φ = 170600080.

The previous prime is 213250033. The next prime is 213250127. The reversal of 213250105 is 501052312.

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 111260304 + 101989801 = 10548^2 + 10099^2 .

It is not a de Polignac number, because 213250105 - 2⁹ = 213249593 is a prime.

It is a super-2 number, since 2×213250105² = 90951214565022050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21325006 + ... + 21325015.

It is an arithmetic number, because the mean of its divisors is an integer number (63975033).

Almost surely, 2^213250105 is an apocalyptic number.

It is an amenable number.

213250105 is a deficient number, since it is larger than the sum of its proper divisors (42650027).

213250105 is an equidigital number, since it uses as much as digits as its factorization.

213250105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42650026.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 213250105 is about 14603.0854616413. The cubic root of 213250105 is about 597.4429186321.

The spelling of 213250105 in words is "two hundred thirteen million, two hundred fifty thousand, one hundred five".