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12312233190 = 2325701319507
BaseRepresentation
bin10110111011101110…
…11100010011100110
31011210001122020202200
423131313130103212
5200203412430230
65353421515330
7614052153405
oct133567342346
934701566680
1012312233190
115248a31034
122477412b46
131212a567aa
1484b29763c
154c0d99160
hex2ddddc4e6

12312233190 has 48 divisors (see below), whose sum is σ = 32018012208. Its totient is φ = 3282625728.

The previous prime is 12312233189. The next prime is 12312233239. The reversal of 12312233190 is 9133221321.

12312233190 is a `hidden beast` number, since 12 + 312 + 2 + 331 + 9 + 0 = 666.

It is a super-2 number, since 2×123122331902 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 621417 + ... + 640923.

It is an arithmetic number, because the mean of its divisors is an integer number (667041921).

Almost surely, 212312233190 is an apocalyptic number.

12312233190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12312233190 is an abundant number, since it is smaller than the sum of its proper divisors (19705779018).

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

12312233190 is a wasteful number, since it uses less digits than its factorization.

12312233190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26533 (or 26530 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The spelling of 12312233190 in words is "twelve billion, three hundred twelve million, two hundred thirty-three thousand, one hundred ninety".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 7013 14026 19507 21039 35065 39014 42078 58521 63117 70130 97535 105195 117042 126234 175563 195070 210390 292605 315585 351126 585210 631170 877815 1755630 136802591 273605182 410407773 684012955 820815546 1231223319 1368025910 2052038865 2462446638 4104077730 6156116595 12312233190