210034309 has 2 divisors, whose sum is σ = 210034310. Its totient is φ = 210034308.

The previous prime is 210034301. The next prime is 210034333. The reversal of 210034309 is 903430012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133471809 + 76562500 = 11553^2 + 8750^2 .

It is a cyclic number.

It is not a de Polignac number, because 210034309 - 2³ = 210034301 is a prime.

It is a super-2 number, since 2×210034309² = 88228821914214962, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 210034309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210034301) 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, 105017154 + 105017155.

It is an arithmetic number, because the mean of its divisors is an integer number (105017155).

Almost surely, 2^210034309 is an apocalyptic number.

It is an amenable number.

210034309 is a deficient number, since it is larger than the sum of its proper divisors (1).

210034309 is an equidigital number, since it uses as much as digits as its factorization.

210034309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 210034309 is about 14492.5604708071. The cubic root of 210034309 is about 594.4245633578.

The spelling of 210034309 in words is "two hundred ten million, thirty-four thousand, three hundred nine".