30805297 has 2 divisors, whose sum is σ = 30805298. Its totient is φ = 30805296.

The previous prime is 30805277. The next prime is 30805331. The reversal of 30805297 is 79250803.

It is an a-pointer prime, because the next prime (30805331) can be obtained adding 30805297 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25310961 + 5494336 = 5031^2 + 2344^2 .

It is a cyclic number.

It is not a de Polignac number, because 30805297 - 2⁷ = 30805169 is a prime.

It is not a weakly prime, because it can be changed into another prime (30805217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15402648 + 15402649.

It is an arithmetic number, because the mean of its divisors is an integer number (15402649).

Almost surely, 2^30805297 is an apocalyptic number.

It is an amenable number.

30805297 is a deficient number, since it is larger than the sum of its proper divisors (1).

30805297 is an equidigital number, since it uses as much as digits as its factorization.

30805297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 30805297 is about 5550.2519762620. The cubic root of 30805297 is about 313.4790101490.

The spelling of 30805297 in words is "thirty million, eight hundred five thousand, two hundred ninety-seven".