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312131030233230 = 2325131053892531371
BaseRepresentation
bin100011011111000011010101…
…1001011100011000010001110
31111221011102202011112012120200
41012332012223023203002032
5311402423322214430410
63023503003222554330
7122513502622220265
oct10676065313430216
91457142664465520
10312131030233230
119050003236697a
122b0111025989a6
1310521aa3260590
14571131865b5dc
15261439ec973c0
hex11be1ab2e308e

312131030233230 has 96 divisors (see below), whose sum is σ = 873975522682080. Its totient is φ = 76831494209280.

The previous prime is 312131030233213. The next prime is 312131030233249. The reversal of 312131030233230 is 32332030131213.

312131030233230 is a `hidden beast` number, since 3 + 1 + 2 + 1 + 31 + 0 + 302 + 3 + 323 + 0 = 666.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 312131030233194 and 312131030233203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 122039445 + ... + 124570815.

It is an arithmetic number, because the mean of its divisors is an integer number (9103911694605).

Almost surely, 2312131030233230 is an apocalyptic number.

312131030233230 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

312131030233230 is an abundant number, since it is smaller than the sum of its proper divisors (561844492448850).

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

312131030233230 is a wasteful number, since it uses less digits than its factorization.

312131030233230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2636786 (or 2636783 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 27.

Adding to 312131030233230 its reverse (32332030131213), we get a palindrome (344463060364443).

The spelling of 312131030233230 in words is "three hundred twelve trillion, one hundred thirty-one billion, thirty million, two hundred thirty-three thousand, two hundred thirty".

Divisors: 1 2 3 5 6 9 10 13 15 18 26 30 39 45 65 78 90 117 130 195 234 390 585 1170 105389 210778 316167 526945 632334 948501 1053890 1370057 1580835 1897002 2531371 2740114 3161670 4110171 4742505 5062742 6850285 7594113 8220342 9485010 12330513 12656855 13700570 15188226 20550855 22782339 24661026 25313710 32907823 37970565 41101710 45564678 61652565 65815646 75941130 98723469 113911695 123305130 164539115 197446938 227823390 296170407 329078230 493617345 592340814 987234690 1480852035 2961704070 266778658319 533557316638 800335974957 1333893291595 1600671949914 2401007924871 2667786583190 3468122558147 4001679874785 4802015849742 6936245116294 8003359749570 10404367674441 12005039624355 17340612790735 20808735348882 24010079248710 31213103023323 34681225581470 52021838372205 62426206046646 104043676744410 156065515116615 312131030233230