30321229 has 2 divisors, whose sum is σ = 30321230. Its totient is φ = 30321228.

The previous prime is 30321197. The next prime is 30321233. The reversal of 30321229 is 92212303.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28355625 + 1965604 = 5325^2 + 1402^2 .

It is an emirp because it is prime and its reverse (92212303) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30321229 - 2⁵ = 30321197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30321259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15160614 + 15160615.

It is an arithmetic number, because the mean of its divisors is an integer number (15160615).

Almost surely, 2^30321229 is an apocalyptic number.

It is an amenable number.

30321229 is a deficient number, since it is larger than the sum of its proper divisors (1).

30321229 is an equidigital number, since it uses as much as digits as its factorization.

30321229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 30321229 is about 5506.4715562690. The cubic root of 30321229 is about 311.8283524676.

The spelling of 30321229 in words is "thirty million, three hundred twenty-one thousand, two hundred twenty-nine".