30328231 has 2 divisors, whose sum is σ = 30328232. Its totient is φ = 30328230.

The previous prime is 30328219. The next prime is 30328253. The reversal of 30328231 is 13282303.

It is a happy number.

It is an a-pointer prime, because the next prime (30328253) can be obtained adding 30328231 to its sum of digits (22).

It is a weak prime.

It is an emirp because it is prime and its reverse (13282303) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30328231 - 2¹⁷ = 30197159 is a prime.

It is a super-2 number, since 2×30328231² = 1839603191178722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30328211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15164115 + 15164116.

It is an arithmetic number, because the mean of its divisors is an integer number (15164116).

Almost surely, 2^30328231 is an apocalyptic number.

30328231 is a deficient number, since it is larger than the sum of its proper divisors (1).

30328231 is an equidigital number, since it uses as much as digits as its factorization.

30328231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 30328231 is about 5507.1073169133. The cubic root of 30328231 is about 311.8523538482.

The spelling of 30328231 in words is "thirty million, three hundred twenty-eight thousand, two hundred thirty-one".