213000109 has 6 divisors (see below), whose sum is σ = 247775694. Its totient is φ = 182571480.

The previous prime is 213000103. The next prime is 213000121. The reversal of 213000109 is 901000312.

It can be written as a sum of positive squares in only one way, i.e., 139948900 + 73051209 = 11830^2 + 8547^2 .

It is not a de Polignac number, because 213000109 - 2¹¹ = 212998061 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213000092 and 213000101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213000103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2173422 + ... + 2173519.

It is an arithmetic number, because the mean of its divisors is an integer number (41295949).

Almost surely, 2^213000109 is an apocalyptic number.

It is an amenable number.

213000109 is a deficient number, since it is larger than the sum of its proper divisors (34775585).

213000109 is an equidigital number, since it uses as much as digits as its factorization.

213000109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4346955 (or 4346948 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 213000109 is about 14594.5232536044. The cubic root of 213000109 is about 597.2093638540.

The spelling of 213000109 in words is "two hundred thirteen million, one hundred nine", and thus it is an aban number.