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13231203210 = 2325147013369
BaseRepresentation
bin11000101001010010…
…00010001110001010
31021011002211202122100
430110221002032022
5204044142000320
610024530334230
7645611241321
oct142451021612
937132752570
1013231203210
11567a73a895
12269312a376
13132b262834
148d73510b8
155268c1790
hex314a4238a

13231203210 has 24 divisors (see below), whose sum is σ = 34401128580. Its totient is φ = 3528320832.

The previous prime is 13231203199. The next prime is 13231203211. The reversal of 13231203210 is 1230213231.

13231203210 is a `hidden beast` number, since 1 + 32 + 312 + 0 + 321 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13087131201 + 144072009 = 114399^2 + 12003^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (13231203211) 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 11 ways as a sum of consecutive naturals, for example, 73506595 + ... + 73506774.

Almost surely, 213231203210 is an apocalyptic number.

13231203210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13231203210 is an abundant number, since it is smaller than the sum of its proper divisors (21169925370).

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

13231203210 is a wasteful number, since it uses less digits than its factorization.

13231203210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147013382 (or 147013379 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 13231203210 its reverse (1230213231), we get a palindrome (14461416441).

The spelling of 13231203210 in words is "thirteen billion, two hundred thirty-one million, two hundred three thousand, two hundred ten".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 147013369 294026738 441040107 735066845 882080214 1323120321 1470133690 2205200535 2646240642 4410401070 6615601605 13231203210