Search a number
-
+
312104013210 = 232511252155009
BaseRepresentation
bin1001000101010101101…
…10010100110110011010
31002211121001202121101200
410202222312110312122
520103142111410320
6355213440055030
731356141224523
oct4425266246632
91084531677350
10312104013210
111103a9640600
12505a3004476
132357b6b07c2
141116a8b784a
1581ba128290
hex48aad94d9a

312104013210 has 144 divisors (see below), whose sum is σ = 893675076840. Its totient is φ = 75514982400.

The previous prime is 312104013203. The next prime is 312104013223. The reversal of 312104013210 is 12310401213.

312104013210 is a `hidden beast` number, since 31 + 21 + 0 + 401 + 3 + 210 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 260721550881 + 51382462329 = 510609^2 + 226677^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5646186 + ... + 5701194.

Almost surely, 2312104013210 is an apocalyptic number.

312104013210 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 312104013210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (446837538420).

312104013210 is an abundant number, since it is smaller than the sum of its proper divisors (581571063630).

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

312104013210 is a wasteful number, since it uses less digits than its factorization.

312104013210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55565 (or 55551 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 312104013210 its reverse (12310401213), we get a palindrome (324414414423).

The spelling of 312104013210 in words is "three hundred twelve billion, one hundred four million, thirteen thousand, two hundred ten".

Divisors: 1 2 3 5 6 9 10 11 15 18 22 30 33 45 55 66 90 99 110 121 165 198 242 330 363 495 521 605 726 990 1042 1089 1210 1563 1815 2178 2605 3126 3630 4689 5210 5445 5731 7815 9378 10890 11462 15630 17193 23445 28655 34386 46890 51579 55009 57310 63041 85965 103158 110018 126082 165027 171930 189123 257895 275045 315205 330054 378246 495081 515790 550090 567369 605099 630410 825135 945615 990162 1134738 1210198 1650270 1815297 1891230 2475405 2836845 3025495 3630594 4950810 5445891 5673690 6050990 6656089 9076485 10891782 13312178 18152970 19968267 27229455 28659689 33280445 39936534 54458910 57319378 59904801 66560890 85979067 99841335 119809602 143298445 171958134 199682670 257937201 286596890 299524005 315256579 429895335 515874402 599048010 630513158 859790670 945769737 1289686005 1576282895 1891539474 2579372010 2837309211 3152565790 3467822369 4728848685 5674618422 6935644738 9457697370 10403467107 14186546055 17339111845 20806934214 28373092110 31210401321 34678223690 52017335535 62420802642 104034671070 156052006605 312104013210