30979491211 has 2 divisors, whose sum is σ = 30979491212. Its totient is φ = 30979491210.

The previous prime is 30979491181. The next prime is 30979491253. The reversal of 30979491211 is 11219497903.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30979491211 is a prime.

It is not a weakly prime, because it can be changed into another prime (30979491511) 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 as a sum of consecutive naturals, namely, 15489745605 + 15489745606.

It is an arithmetic number, because the mean of its divisors is an integer number (15489745606).

Almost surely, 2^30979491211 is an apocalyptic number.

30979491211 is a deficient number, since it is larger than the sum of its proper divisors (1).

30979491211 is an equidigital number, since it uses as much as digits as its factorization.

30979491211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 46.

The spelling of 30979491211 in words is "thirty billion, nine hundred seventy-nine million, four hundred ninety-one thousand, two hundred eleven".