30000009971 has 2 divisors, whose sum is σ = 30000009972. Its totient is φ = 30000009970.

The previous prime is 30000009961. The next prime is 30000010021. The reversal of 30000009971 is 17990000003.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30000009971 - 2¹⁰ = 30000008947 is a prime.

It is not a weakly prime, because it can be changed into another prime (30000009931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15000004985 + 15000004986.

It is an arithmetic number, because the mean of its divisors is an integer number (15000004986).

Almost surely, 2^30000009971 is an apocalyptic number.

30000009971 is a deficient number, since it is larger than the sum of its proper divisors (1).

30000009971 is an equidigital number, since it uses as much as digits as its factorization.

30000009971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1701, while the sum is 29.

Adding to 30000009971 its reverse (17990000003), we get a palindrome (47990009974).

The spelling of 30000009971 in words is "thirty billion, nine thousand, nine hundred seventy-one".