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12320313210 = 2325211648779
BaseRepresentation
bin10110111100101100…
…10000111101111010
31011210121211202110200
423132112100331322
5200213000010320
65354311023030
7614210635332
oct133626207572
934717752420
1012320313210
11525254a737
12247a06aa76
13121462547a
1484c39c0c2
154c1943290
hex2de590f7a

12320313210 has 48 divisors (see below), whose sum is σ = 32184678240. Its totient is φ = 3269841120.

The previous prime is 12320313197. The next prime is 12320313221. The reversal of 12320313210 is 1231302321.

12320313210 is a `hidden beast` number, since 12 + 320 + 313 + 21 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 305400 + ... + 343379.

It is an arithmetic number, because the mean of its divisors is an integer number (670514130).

Almost surely, 212320313210 is an apocalyptic number.

12320313210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12320313210 is an abundant number, since it is smaller than the sum of its proper divisors (19864365030).

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

12320313210 is a wasteful number, since it uses less digits than its factorization.

12320313210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649003 (or 649000 counting only the distinct ones).

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

Adding to 12320313210 its reverse (1231302321), we get a palindrome (13551615531).

The spelling of 12320313210 in words is "twelve billion, three hundred twenty million, three hundred thirteen thousand, two hundred ten".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 211 422 633 1055 1266 1899 2110 3165 3798 6330 9495 18990 648779 1297558 1946337 3243895 3892674 5839011 6487790 9731685 11678022 19463370 29195055 58390110 136892369 273784738 410677107 684461845 821354214 1232031321 1368923690 2053385535 2464062642 4106771070 6160156605 12320313210