30147197 has 2 divisors, whose sum is σ = 30147198. Its totient is φ = 30147196.

The previous prime is 30147151. The next prime is 30147199. The reversal of 30147197 is 79174103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18783556 + 11363641 = 4334^2 + 3371^2 .

It is a cyclic number.

It is not a de Polignac number, because 30147197 - 2²² = 25952893 is a prime.

Together with 30147199, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30147199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15073598 + 15073599.

It is an arithmetic number, because the mean of its divisors is an integer number (15073599).

Almost surely, 2^30147197 is an apocalyptic number.

It is an amenable number.

30147197 is a deficient number, since it is larger than the sum of its proper divisors (1).

30147197 is an equidigital number, since it uses as much as digits as its factorization.

30147197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 30147197 is about 5490.6463189683. The cubic root of 30147197 is about 311.2306164711.

The spelling of 30147197 in words is "thirty million, one hundred forty-seven thousand, one hundred ninety-seven".