30280897 has 2 divisors, whose sum is σ = 30280898. Its totient is φ = 30280896.

The previous prime is 30280879. The next prime is 30280907. The reversal of 30280897 is 79808203.

Together with previous prime (30280879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26532801 + 3748096 = 5151^2 + 1936^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30280897 is a prime.

It is not a weakly prime, because it can be changed into another prime (30280297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15140448 + 15140449.

It is an arithmetic number, because the mean of its divisors is an integer number (15140449).

Almost surely, 2^30280897 is an apocalyptic number.

It is an amenable number.

30280897 is a deficient number, since it is larger than the sum of its proper divisors (1).

30280897 is an equidigital number, since it uses as much as digits as its factorization.

30280897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 30280897 is about 5502.8081013243. The cubic root of 30280897 is about 311.6900308805.

The spelling of 30280897 in words is "thirty million, two hundred eighty thousand, eight hundred ninety-seven".