30312312011 has 2 divisors, whose sum is σ = 30312312012. Its totient is φ = 30312312010.

The previous prime is 30312311987. The next prime is 30312312013. The reversal of 30312312011 is 11021321303.

It is a strong prime.

It is an emirp because it is prime and its reverse (11021321303) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30312312011 is a prime.

Together with 30312312013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30312312013) 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, 15156156005 + 15156156006.

It is an arithmetic number, because the mean of its divisors is an integer number (15156156006).

Almost surely, 2^30312312011 is an apocalyptic number.

30312312011 is a deficient number, since it is larger than the sum of its proper divisors (1).

30312312011 is an equidigital number, since it uses as much as digits as its factorization.

30312312011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 30312312011 its reverse (11021321303), we get a palindrome (41333633314).

The spelling of 30312312011 in words is "thirty billion, three hundred twelve million, three hundred twelve thousand, eleven".