30321001 has 2 divisors, whose sum is σ = 30321002. Its totient is φ = 30321000.

The previous prime is 30320999. The next prime is 30321023. The reversal of 30321001 is 10012303.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18071001 + 12250000 = 4251^2 + 3500^2 .

It is a cyclic number.

It is not a de Polignac number, because 30321001 - 2¹ = 30320999 is a prime.

Together with 30320999, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30321041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15160500 + 15160501.

It is an arithmetic number, because the mean of its divisors is an integer number (15160501).

Almost surely, 2^30321001 is an apocalyptic number.

It is an amenable number.

30321001 is a deficient number, since it is larger than the sum of its proper divisors (1).

30321001 is an equidigital number, since it uses as much as digits as its factorization.

30321001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 30321001 is about 5506.4508533174. The cubic root of 30321001 is about 311.8275708695.

Adding to 30321001 its reverse (10012303), we get a palindrome (40333304).

The spelling of 30321001 in words is "thirty million, three hundred twenty-one thousand, one".