220846310309 has 2 divisors, whose sum is σ = 220846310310. Its totient is φ = 220846310308.

The previous prime is 220846310299. The next prime is 220846310317. The reversal of 220846310309 is 903013648022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199907352100 + 20938958209 = 447110^2 + 144703^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220846310309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220846313309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110423155154 + 110423155155.

It is an arithmetic number, because the mean of its divisors is an integer number (110423155155).

Almost surely, 2^220846310309 is an apocalyptic number.

It is an amenable number.

220846310309 is a deficient number, since it is larger than the sum of its proper divisors (1).

220846310309 is an equidigital number, since it uses as much as digits as its factorization.

220846310309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 220846310309 in words is "two hundred twenty billion, eight hundred forty-six million, three hundred ten thousand, three hundred nine".