30708217109 has 4 divisors (see below), whose sum is σ = 30774542016. Its totient is φ = 30641892204.

The previous prime is 30708217103. The next prime is 30708217117. The reversal of 30708217109 is 90171280703.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30708217109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30708217103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33161759 + ... + 33162684.

It is an arithmetic number, because the mean of its divisors is an integer number (7693635504).

Almost surely, 2^30708217109 is an apocalyptic number.

It is an amenable number.

30708217109 is a deficient number, since it is larger than the sum of its proper divisors (66324907).

30708217109 is an equidigital number, since it uses as much as digits as its factorization.

30708217109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66324906.

The product of its (nonzero) digits is 21168, while the sum is 38.

The spelling of 30708217109 in words is "thirty billion, seven hundred eight million, two hundred seventeen thousand, one hundred nine".