30000001 has 2 divisors, whose sum is σ = 30000002. Its totient is φ = 30000000.

The previous prime is 29999999. The next prime is 30000023. The reversal of 30000001 is 10000003.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23030401 + 6969600 = 4799^2 + 2640^2 .

It is a cyclic number.

It is not a de Polignac number, because 30000001 - 2¹ = 29999999 is a prime.

Together with 29999999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (30000041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15000000 + 15000001.

It is an arithmetic number, because the mean of its divisors is an integer number (15000001).

Almost surely, 2^30000001 is an apocalyptic number.

It is an amenable number.

30000001 is a deficient number, since it is larger than the sum of its proper divisors (1).

30000001 is an equidigital number, since it uses as much as digits as its factorization.

30000001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3, while the sum is 4.

The square root of 30000001 is about 5477.2256663388. The cubic root of 30000001 is about 310.7232540479.

Adding to 30000001 its reverse (10000003), we get a palindrome (40000004).

The spelling of 30000001 in words is "thirty million, one", and thus it is an aban number and an uban number.