220316947 has 2 divisors, whose sum is σ = 220316948. Its totient is φ = 220316946.

The previous prime is 220316939. The next prime is 220316953. The reversal of 220316947 is 749613022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220316947 - 2³ = 220316939 is a prime.

It is not a weakly prime, because it can be changed into another prime (220316917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110158473 + 110158474.

It is an arithmetic number, because the mean of its divisors is an integer number (110158474).

Almost surely, 2^220316947 is an apocalyptic number.

220316947 is a deficient number, since it is larger than the sum of its proper divisors (1).

220316947 is an equidigital number, since it uses as much as digits as its factorization.

220316947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 220316947 is about 14843.0774100252. The cubic root of 220316947 is about 603.9708359455.

Adding to 220316947 its reverse (749613022), we get a palindrome (969929969).

The spelling of 220316947 in words is "two hundred twenty million, three hundred sixteen thousand, nine hundred forty-seven".