30835968209 has 2 divisors, whose sum is σ = 30835968210. Its totient is φ = 30835968208.

The previous prime is 30835968193. The next prime is 30835968253. The reversal of 30835968209 is 90286953803.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28992553984 + 1843414225 = 170272^2 + 42935^2 .

It is a cyclic number.

It is not a de Polignac number, because 30835968209 - 2⁴ = 30835968193 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (30835968259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15417984104 + 15417984105.

It is an arithmetic number, because the mean of its divisors is an integer number (15417984105).

Almost surely, 2^30835968209 is an apocalyptic number.

It is an amenable number.

30835968209 is a deficient number, since it is larger than the sum of its proper divisors (1).

30835968209 is an equidigital number, since it uses as much as digits as its factorization.

30835968209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2799360, while the sum is 53.

The spelling of 30835968209 in words is "thirty billion, eight hundred thirty-five million, nine hundred sixty-eight thousand, two hundred nine".