30471343891 has 2 divisors, whose sum is σ = 30471343892. Its totient is φ = 30471343890.

The previous prime is 30471343853. The next prime is 30471343919. The reversal of 30471343891 is 19834317403.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30471343891 - 2⁹ = 30471343379 is a prime.

It is not a weakly prime, because it can be changed into another prime (30471343801) 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, 15235671945 + 15235671946.

It is an arithmetic number, because the mean of its divisors is an integer number (15235671946).

Almost surely, 2^30471343891 is an apocalyptic number.

30471343891 is a deficient number, since it is larger than the sum of its proper divisors (1).

30471343891 is an equidigital number, since it uses as much as digits as its factorization.

30471343891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 30471343891 in words is "thirty billion, four hundred seventy-one million, three hundred forty-three thousand, eight hundred ninety-one".