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213130133210 = 2561349393661
BaseRepresentation
bin1100011001111110001…
…0111011111011011010
3202101010101221120011102
43012133202323323122
511442442303230320
6241524410231402
721253364145521
oct3063742737332
9671111846142
10213130133210
118242a449665
1235380a25562
1317137655177
14a45bc434b8
15582602e175
hex319f8bbeda

213130133210 has 16 divisors (see below), whose sum is σ = 389923326792. Its totient is φ = 83854478400.

The previous prime is 213130133179. The next prime is 213130133219. The reversal of 213130133210 is 12331031312.

It can be written as a sum of positive squares in 4 ways, for example, as 144873868129 + 68256265081 = 380623^2 + 261259^2 .

It is a super-2 number, since 2×2131301332102 (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213130133219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174696221 + ... + 174697440.

Almost surely, 2213130133210 is an apocalyptic number.

213130133210 is a deficient number, since it is larger than the sum of its proper divisors (176793193582).

213130133210 is a wasteful number, since it uses less digits than its factorization.

213130133210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349393729.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 213130133210 its reverse (12331031312), we get a palindrome (225461164522).

The spelling of 213130133210 in words is "two hundred thirteen billion, one hundred thirty million, one hundred thirty-three thousand, two hundred ten".

Divisors: 1 2 5 10 61 122 305 610 349393661 698787322 1746968305 3493936610 21313013321 42626026642 106565066605 213130133210