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131112323030 = 251317151392893
BaseRepresentation
bin111101000011011100…
…1110100011111010110
3110112102102222002222002
41322012321310133112
54122004223314110
6140122052035302
712321041233433
oct1720671643726
9415372862862
10131112323030
1150671540967
12214b1302b32
13c49647b540
1464bb0d4b8a
153625830aa5
hex1e86e747d6

131112323030 has 64 divisors (see below), whose sum is σ = 270889411968. Its totient is φ = 45261158400.

The previous prime is 131112323021. The next prime is 131112323033. The reversal of 131112323030 is 30323211131.

It is a junction number, because it is equal to n+sod(n) for n = 131112322993 and 131112323011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131112323033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137264 + ... + 530156.

It is an arithmetic number, because the mean of its divisors is an integer number (4232647062).

Almost surely, 2131112323030 is an apocalyptic number.

131112323030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131112323030 is an abundant number, since it is smaller than the sum of its proper divisors (139777088938).

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

131112323030 is a wasteful number, since it uses less digits than its factorization.

131112323030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393081.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 131112323030 its reverse (30323211131), we get a palindrome (161435534161).

The spelling of 131112323030 in words is "one hundred thirty-one billion, one hundred twelve million, three hundred twenty-three thousand, thirty".

Divisors: 1 2 5 10 13 17 26 34 65 85 130 151 170 221 302 442 755 1105 1510 1963 2210 2567 3926 5134 9815 12835 19630 25670 33371 66742 166855 333710 392893 785786 1964465 3928930 5107609 6679181 10215218 13358362 25538045 33395905 51076090 59326843 66791810 86829353 118653686 173658706 296634215 434146765 593268430 771248959 868293530 1008556331 1542497918 2017112662 3856244795 5042781655 7712489590 10085563310 13111232303 26222464606 65556161515 131112323030