30819206911 has 4 divisors (see below), whose sum is σ = 30832056000. Its totient is φ = 30806357824.

The previous prime is 30819206909. The next prime is 30819206939. The reversal of 30819206911 is 11960291803.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30819206911 - 2¹ = 30819206909 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 (30819206111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6420946 + ... + 6425743.

It is an arithmetic number, because the mean of its divisors is an integer number (7708014000).

Almost surely, 2^30819206911 is an apocalyptic number.

30819206911 is a deficient number, since it is larger than the sum of its proper divisors (12849089).

30819206911 is a wasteful number, since it uses less digits than its factorization.

30819206911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12849088.

The product of its (nonzero) digits is 23328, while the sum is 40.

The spelling of 30819206911 in words is "thirty billion, eight hundred nineteen million, two hundred six thousand, nine hundred eleven".