20341147 has 2 divisors, whose sum is σ = 20341148. Its totient is φ = 20341146.

The previous prime is 20341141. The next prime is 20341169. The reversal of 20341147 is 74114302.

It is an a-pointer prime, because the next prime (20341169) can be obtained adding 20341147 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20341147 - 2⁷ = 20341019 is a prime.

It is a super-2 number, since 2×20341147² = 827524522551218, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20341141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10170573 + 10170574.

It is an arithmetic number, because the mean of its divisors is an integer number (10170574).

Almost surely, 2^20341147 is an apocalyptic number.

20341147 is a deficient number, since it is larger than the sum of its proper divisors (1).

20341147 is an equidigital number, since it uses as much as digits as its factorization.

20341147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 20341147 is about 4510.1160738943. The cubic root of 20341147 is about 272.9764277214.

Adding to 20341147 its reverse (74114302), we get a palindrome (94455449).

The spelling of 20341147 in words is "twenty million, three hundred forty-one thousand, one hundred forty-seven".