30211147 has 2 divisors, whose sum is σ = 30211148. Its totient is φ = 30211146.

The previous prime is 30211117. The next prime is 30211151. The reversal of 30211147 is 74111203.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30211147 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30211117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15105573 + 15105574.

It is an arithmetic number, because the mean of its divisors is an integer number (15105574).

Almost surely, 2^30211147 is an apocalyptic number.

30211147 is a deficient number, since it is larger than the sum of its proper divisors (1).

30211147 is an equidigital number, since it uses as much as digits as its factorization.

30211147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 30211147 is about 5496.4667742105. The cubic root of 30211147 is about 311.4505279188.

It can be divided in two parts, 302 and 11147, that added together give a square (11449 = 107²).

The spelling of 30211147 in words is "thirty million, two hundred eleven thousand, one hundred forty-seven".