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213120312200 = 23521106996269
BaseRepresentation
bin1100011001111011110…
…1011110001110001000
3202101002201110121021022
43012132331132032020
511442432244442300
6241523415532012
721253214523035
oct3063675361610
9671081417238
10213120312200
1182424950a24
123537968a008
13171355c6c13
14a45a80838c
15582523e285
hex319ef5e388

213120312200 has 48 divisors (see below), whose sum is σ = 495554638500. Its totient is φ = 85239537920.

The previous prime is 213120312191. The next prime is 213120312217. The reversal of 213120312200 is 2213021312.

213120312200 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 100467445156 + 112652867044 = 316966^2 + 335638^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2165666 + ... + 2261934.

Almost surely, 2213120312200 is an apocalyptic number.

213120312200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213120312200 is an abundant number, since it is smaller than the sum of its proper divisors (282434326300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213120312200 is a wasteful number, since it uses less digits than its factorization.

213120312200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107354 (or 107345 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 213120312200 its reverse (2213021312), we get a palindrome (215333333512).

The spelling of 213120312200 in words is "two hundred thirteen billion, one hundred twenty million, three hundred twelve thousand, two hundred".

Divisors: 1 2 4 5 8 10 20 25 40 50 100 200 11069 22138 44276 55345 88552 96269 110690 192538 221380 276725 385076 442760 481345 553450 770152 962690 1106900 1925380 2213800 2406725 3850760 4813450 9626900 19253800 1065601561 2131203122 4262406244 5328007805 8524812488 10656015610 21312031220 26640039025 42624062440 53280078050 106560156100 213120312200