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213131032300 = 22528923947307
BaseRepresentation
bin1100011001111110011…
…0010111011011101100
3202101010110122020111001
43012133212113123230
511442443021013200
6241524441410044
721253404612004
oct3063746273354
9671113566431
10213131032300
118242aa0310a
1235381199924
13171378ab484
14a45bdd9004
15582615a76a
hex319f9976ec

213131032300 has 36 divisors (see below), whose sum is σ = 467690925240. Its totient is φ = 84294517120.

The previous prime is 213131032291. The next prime is 213131032363. The reversal of 213131032300 is 3230131312.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 11964754 + ... + 11982553.

It is an arithmetic number, because the mean of its divisors is an integer number (12991414590).

Almost surely, 2213131032300 is an apocalyptic number.

213131032300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213131032300 is an abundant number, since it is smaller than the sum of its proper divisors (254559892940).

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

213131032300 is a wasteful number, since it uses less digits than its factorization.

213131032300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23947410 (or 23947403 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 213131032300 its reverse (3230131312), we get a palindrome (216361163612).

The spelling of 213131032300 in words is "two hundred thirteen billion, one hundred thirty-one million, thirty-two thousand, three hundred".

Divisors: 1 2 4 5 10 20 25 50 89 100 178 356 445 890 1780 2225 4450 8900 23947307 47894614 95789228 119736535 239473070 478946140 598682675 1197365350 2131310323 2394730700 4262620646 8525241292 10656551615 21313103230 42626206460 53282758075 106565516150 213131032300