30551406971 has 2 divisors, whose sum is σ = 30551406972. Its totient is φ = 30551406970.

The previous prime is 30551406917. The next prime is 30551407021. The reversal of 30551406971 is 17960415503.

Together with previous prime (30551406917) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30551406971 is a prime.

It is not a weakly prime, because it can be changed into another prime (30551406071) 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, 15275703485 + 15275703486.

It is an arithmetic number, because the mean of its divisors is an integer number (15275703486).

Almost surely, 2^30551406971 is an apocalyptic number.

30551406971 is a deficient number, since it is larger than the sum of its proper divisors (1).

30551406971 is an equidigital number, since it uses as much as digits as its factorization.

30551406971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113400, while the sum is 41.

The spelling of 30551406971 in words is "thirty billion, five hundred fifty-one million, four hundred six thousand, nine hundred seventy-one".