30340831 has 2 divisors, whose sum is σ = 30340832. Its totient is φ = 30340830.

The previous prime is 30340829. The next prime is 30340867. The reversal of 30340831 is 13804303.

It is a weak prime.

It is an emirp because it is prime and its reverse (13804303) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30340831 - 2¹ = 30340829 is a prime.

It is a super-2 number, since 2×30340831² = 1841132051541122, which contains 22 as substring.

Together with 30340829, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30340031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15170415 + 15170416.

It is an arithmetic number, because the mean of its divisors is an integer number (15170416).

Almost surely, 2^30340831 is an apocalyptic number.

30340831 is a deficient number, since it is larger than the sum of its proper divisors (1).

30340831 is an equidigital number, since it uses as much as digits as its factorization.

30340831 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 30340831 is about 5508.2511743747. The cubic root of 30340831 is about 311.8955346899.

The spelling of 30340831 in words is "thirty million, three hundred forty thousand, eight hundred thirty-one".