30011321 has 2 divisors, whose sum is σ = 30011322. Its totient is φ = 30011320.

The previous prime is 30011299. The next prime is 30011347. The reversal of 30011321 is 12311003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29855296 + 156025 = 5464^2 + 395^2 .

It is a cyclic number.

It is not a de Polignac number, because 30011321 - 2¹⁰ = 30010297 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (30011381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15005660 + 15005661.

It is an arithmetic number, because the mean of its divisors is an integer number (15005661).

Almost surely, 2^30011321 is an apocalyptic number.

It is an amenable number.

30011321 is a deficient number, since it is larger than the sum of its proper divisors (1).

30011321 is an equidigital number, since it uses as much as digits as its factorization.

30011321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 30011321 is about 5478.2589387505. The cubic root of 30011321 is about 310.7623312123.

Adding to 30011321 its reverse (12311003), we get a palindrome (42322324).

The spelling of 30011321 in words is "thirty million, eleven thousand, three hundred twenty-one".