30211320091 has 2 divisors, whose sum is σ = 30211320092. Its totient is φ = 30211320090.

The previous prime is 30211320059. The next prime is 30211320199. The reversal of 30211320091 is 19002311203.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30211320091 - 2⁵ = 30211320059 is a prime.

It is not a weakly prime, because it can be changed into another prime (30211320011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15105660045 + 15105660046.

It is an arithmetic number, because the mean of its divisors is an integer number (15105660046).

Almost surely, 2^30211320091 is an apocalyptic number.

30211320091 is a deficient number, since it is larger than the sum of its proper divisors (1).

30211320091 is an equidigital number, since it uses as much as digits as its factorization.

30211320091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 30211320091 its reverse (19002311203), we get a palindrome (49213631294).

The spelling of 30211320091 in words is "thirty billion, two hundred eleven million, three hundred twenty thousand, ninety-one".