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1200302213 = 1129919853
BaseRepresentation
bin100011110001011…
…0010100010000101
310002122120200002112
41013202302202011
54424234132323
6315034350405
741513254235
oct10742624205
93078520075
101200302213
115665a2900
12295b8b405
1316189bbc6
14b55abcc5
157059a178
hex478b2885

1200302213 has 6 divisors (see below), whose sum is σ = 1319340582. Its totient is φ = 1091183720.

The previous prime is 1200302179. The next prime is 1200302227. The reversal of 1200302213 is 3122030021.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 736416769 + 463885444 = 27137^2 + 21538^2 .

It is not a de Polignac number, because 1200302213 - 212 = 1200298117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200302513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4959806 + ... + 4960047.

It is an arithmetic number, because the mean of its divisors is an integer number (219890097).

Almost surely, 21200302213 is an apocalyptic number.

It is an amenable number.

1200302213 is a deficient number, since it is larger than the sum of its proper divisors (119038369).

1200302213 is an equidigital number, since it uses as much as digits as its factorization.

1200302213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9919875 (or 9919864 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1200302213 is about 34645.3779456943. The cubic root of 1200302213 is about 1062.7477698154.

Adding to 1200302213 its reverse (3122030021), we get a palindrome (4322332234).

The spelling of 1200302213 in words is "one billion, two hundred million, three hundred two thousand, two hundred thirteen".

Divisors: 1 11 121 9919853 109118383 1200302213