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131230330 = 25721197251
BaseRepresentation
bin1111101001001…
…10101001111010
3100010221012011121
413310212221322
5232043332310
621004415454
73152303500
oct764465172
9303835147
10131230330
1168092320
1237b4758a
13212597aa
1413600670
15b7c30da
hex7d26a7a

131230330 has 96 divisors (see below), whose sum is σ = 304057152. Its totient is φ = 40320000.

The previous prime is 131230303. The next prime is 131230339. The reversal of 131230330 is 33032131.

It is not an unprimeable number, because it can be changed into a prime (131230339) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 522705 + ... + 522955.

It is an arithmetic number, because the mean of its divisors is an integer number (3167262).

Almost surely, 2131230330 is an apocalyptic number.

131230330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131230330 is an abundant number, since it is smaller than the sum of its proper divisors (172826822).

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

131230330 is a wasteful number, since it uses less digits than its factorization.

131230330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380 (or 373 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 131230330 is about 11455.5807360430. The cubic root of 131230330 is about 508.1727898167.

Adding to 131230330 its reverse (33032131), we get a palindrome (164262461).

The spelling of 131230330 in words is "one hundred thirty-one million, two hundred thirty thousand, three hundred thirty".

Divisors: 1 2 5 7 10 11 14 22 35 49 55 70 77 97 98 110 154 194 245 251 385 485 490 502 539 679 770 970 1067 1078 1255 1358 1757 2134 2510 2695 2761 3395 3514 4753 5335 5390 5522 6790 7469 8785 9506 10670 12299 13805 14938 17570 19327 23765 24347 24598 27610 37345 38654 47530 48694 52283 61495 74690 96635 104566 121735 122990 135289 170429 193270 243470 261415 267817 270578 340858 522830 535634 676445 852145 1193003 1339085 1352890 1704290 1874719 2386006 2678170 3749438 5965015 9373595 11930030 13123033 18747190 26246066 65615165 131230330