30195397 has 2 divisors, whose sum is σ = 30195398. Its totient is φ = 30195396.

The previous prime is 30195391. The next prime is 30195401. The reversal of 30195397 is 79359103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17564481 + 12630916 = 4191^2 + 3554^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30195397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30195391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15097698 + 15097699.

It is an arithmetic number, because the mean of its divisors is an integer number (15097699).

Almost surely, 2^30195397 is an apocalyptic number.

It is an amenable number.

30195397 is a deficient number, since it is larger than the sum of its proper divisors (1).

30195397 is an equidigital number, since it uses as much as digits as its factorization.

30195397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25515, while the sum is 37.

The square root of 30195397 is about 5495.0338488493. The cubic root of 30195397 is about 311.3963955981.

The spelling of 30195397 in words is "thirty million, one hundred ninety-five thousand, three hundred ninety-seven".