30422281 has 2 divisors, whose sum is σ = 30422282. Its totient is φ = 30422280.

The previous prime is 30422279. The next prime is 30422291. The reversal of 30422281 is 18222403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30415225 + 7056 = 5515^2 + 84^2 .

It is a cyclic number.

It is not a de Polignac number, because 30422281 - 2¹ = 30422279 is a prime.

It is a super-2 number, since 2×30422281² = 1851030362485922, which contains 22 as substring.

Together with 30422279, 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 (30422201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15211140 + 15211141.

It is an arithmetic number, because the mean of its divisors is an integer number (15211141).

Almost surely, 2^30422281 is an apocalyptic number.

It is an amenable number.

30422281 is a deficient number, since it is larger than the sum of its proper divisors (1).

30422281 is an equidigital number, since it uses as much as digits as its factorization.

30422281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 30422281 is about 5515.6396727850. The cubic root of 30422281 is about 312.1743799736.

Adding to 30422281 its reverse (18222403), we get a palindrome (48644684).

It can be divided in two parts, 30422 and 281, that added together give a palindrome (30703).

The spelling of 30422281 in words is "thirty million, four hundred twenty-two thousand, two hundred eighty-one".