210030109 has 2 divisors, whose sum is σ = 210030110. Its totient is φ = 210030108.

The previous prime is 210030101. The next prime is 210030113. The reversal of 210030109 is 901030012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180902500 + 29127609 = 13450^2 + 5397^2 .

It is a cyclic number.

It is not a de Polignac number, because 210030109 - 2³ = 210030101 is a prime.

It is a super-2 number, since 2×210030109² = 88225293373103762, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210030092 and 210030101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210030101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105015054 + 105015055.

It is an arithmetic number, because the mean of its divisors is an integer number (105015055).

Almost surely, 2^210030109 is an apocalyptic number.

It is an amenable number.

210030109 is a deficient number, since it is larger than the sum of its proper divisors (1).

210030109 is an equidigital number, since it uses as much as digits as its factorization.

210030109 is an odious number, because the sum of its binary digits is odd.

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

The square root of 210030109 is about 14492.4155681515. The cubic root of 210030109 is about 594.4206011483.

The spelling of 210030109 in words is "two hundred ten million, thirty thousand, one hundred nine".