220523323309 has 2 divisors, whose sum is σ = 220523323310. Its totient is φ = 220523323308.

The previous prime is 220523323301. The next prime is 220523323327. The reversal of 220523323309 is 903323325022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146729600809 + 73793722500 = 383053^2 + 271650^2 .

It is a cyclic number.

It is not a de Polignac number, because 220523323309 - 2³ = 220523323301 is a prime.

It is a super-2 number, since 2×220523323309² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220523323301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110261661654 + 110261661655.

It is an arithmetic number, because the mean of its divisors is an integer number (110261661655).

Almost surely, 2^220523323309 is an apocalyptic number.

It is an amenable number.

220523323309 is a deficient number, since it is larger than the sum of its proper divisors (1).

220523323309 is an equidigital number, since it uses as much as digits as its factorization.

220523323309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 34.

The spelling of 220523323309 in words is "two hundred twenty billion, five hundred twenty-three million, three hundred twenty-three thousand, three hundred nine".