30930795811 has 4 divisors (see below), whose sum is σ = 30931777800. Its totient is φ = 30929813824.

The previous prime is 30930795793. The next prime is 30930795827. The reversal of 30930795811 is 11859703903.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11859703903 = 29 ⋅408955307.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30930795811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30930795851) 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, 442126 + ... + 507283.

It is an arithmetic number, because the mean of its divisors is an integer number (7732944450).

Almost surely, 2^30930795811 is an apocalyptic number.

30930795811 is a deficient number, since it is larger than the sum of its proper divisors (981989).

30930795811 is an equidigital number, since it uses as much as digits as its factorization.

30930795811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981988.

The product of its (nonzero) digits is 204120, while the sum is 46.

The spelling of 30930795811 in words is "thirty billion, nine hundred thirty million, seven hundred ninety-five thousand, eight hundred eleven".