30309933971 has 2 divisors, whose sum is σ = 30309933972. Its totient is φ = 30309933970.

The previous prime is 30309933883. The next prime is 30309934007. The reversal of 30309933971 is 17933990303.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30309933971 is a prime.

It is not a weakly prime, because it can be changed into another prime (30309903971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15154966985 + 15154966986.

It is an arithmetic number, because the mean of its divisors is an integer number (15154966986).

Almost surely, 2^30309933971 is an apocalyptic number.

30309933971 is a deficient number, since it is larger than the sum of its proper divisors (1).

30309933971 is an equidigital number, since it uses as much as digits as its factorization.

30309933971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 413343, while the sum is 47.

The spelling of 30309933971 in words is "thirty billion, three hundred nine million, nine hundred thirty-three thousand, nine hundred seventy-one".