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11031222223 = 73805341413
BaseRepresentation
bin10100100011000001…
…10001011111001111
31001110210012011002001
422101200301133033
5140042443102343
65022341213131
7540235561510
oct122140613717
931423164061
1011031222223
11475092358a
12217a4011a7
13106a539a38
147690baa07
154486aa44d
hex2918317cf

11031222223 has 8 divisors (see below), whose sum is σ = 12607746848. Its totient is φ = 9454856544.

The previous prime is 11031222221. The next prime is 11031222227. The reversal of 11031222223 is 32222213011.

11031222223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11031222223 - 21 = 11031222221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11031222223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11031222221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245665 + ... + 287077.

It is an arithmetic number, because the mean of its divisors is an integer number (1575968356).

Almost surely, 211031222223 is an apocalyptic number.

11031222223 is a deficient number, since it is larger than the sum of its proper divisors (1576524625).

11031222223 is an equidigital number, since it uses as much as digits as its factorization.

11031222223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79473.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 11031222223 its reverse (32222213011), we get a palindrome (43253435234).

The spelling of 11031222223 in words is "eleven billion, thirty-one million, two hundred twenty-two thousand, two hundred twenty-three".

Divisors: 1 7 38053 41413 266371 289891 1575888889 11031222223