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12131102131230 = 235863694681889
BaseRepresentation
bin1011000010000111111000…
…0010001000010000011110
31120221201111100212102020110
42300201332002020100132
53042223444121144410
641444541255430450
72361305006520315
oct260417602102036
946851440772213
1012131102131230
113957853994495
12143b109685426
1369cc5ba10174
142dd2115bd27c
151608578db720
hexb087e08841e

12131102131230 has 32 divisors (see below), whose sum is σ = 29114988429600. Its totient is φ = 3234922422272.

The previous prime is 12131102131219. The next prime is 12131102131261. The reversal of 12131102131230 is 3213120113121.

It is a junction number, because it is equal to n+sod(n) for n = 12131102131197 and 12131102131206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250126 + ... + 4932014.

It is an arithmetic number, because the mean of its divisors is an integer number (909843388425).

Almost surely, 212131102131230 is an apocalyptic number.

12131102131230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12131102131230 is an abundant number, since it is smaller than the sum of its proper divisors (16983886298370).

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

12131102131230 is a wasteful number, since it uses less digits than its factorization.

12131102131230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4768268.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 12131102131230 its reverse (3213120113121), we get a palindrome (15344222244351).

The spelling of 12131102131230 in words is "twelve trillion, one hundred thirty-one billion, one hundred two million, one hundred thirty-one thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 86369 172738 259107 431845 518214 863690 1295535 2591070 4681889 9363778 14045667 23409445 28091334 46818890 70228335 140456670 404370071041 808740142082 1213110213123 2021850355205 2426220426246 4043700710410 6065551065615 12131102131230