146313217 has 2 divisors, whose sum is σ = 146313218. Its totient is φ = 146313216.

The previous prime is 146313187. The next prime is 146313221. The reversal of 146313217 is 712313641.

It is a Cunningham number, because it is equal to 12096²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146313216 + 1 = 12096^2 + 1^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146313217 is a prime.

It is not a weakly prime, because it can be changed into another prime (146313247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73156608 + 73156609.

It is an arithmetic number, because the mean of its divisors is an integer number (73156609).

Almost surely, 2^146313217 is an apocalyptic number.

It is an amenable number.

146313217 is a deficient number, since it is larger than the sum of its proper divisors (1).

146313217 is an equidigital number, since it uses as much as digits as its factorization.

146313217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 28.

The square root of 146313217 is about 12096.0000413360. Note that the first 4 decimals coincide. The cubic root of 146313217 is about 526.9400234438.

Adding to 146313217 its reverse (712313641), we get a palindrome (858626858).

The spelling of 146313217 in words is "one hundred forty-six million, three hundred thirteen thousand, two hundred seventeen".