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120310001300 = 225217216132749
BaseRepresentation
bin111000000001100001…
…0001110111010010100
3102111112121111022100002
41300003002032322110
53432343330020200
6131134124510432
711456252065166
oct1600302167224
9374477438302
10120310001300
114702894a745
121b3976ab418
13b4644a74a8
145b745a0936
1531e22dcbd5
hex1c0308ee94

120310001300 has 72 divisors (see below), whose sum is σ = 276566283000. Its totient is φ = 45270835200.

The previous prime is 120310001299. The next prime is 120310001303. The reversal of 120310001300 is 3100013021.

It can be written as a sum of positive squares in 12 ways, for example, as 22813685764 + 97496315536 = 151042^2 + 312244^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120310001303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3657326 + ... + 3690074.

It is an arithmetic number, because the mean of its divisors is an integer number (3841198375).

Almost surely, 2120310001300 is an apocalyptic number.

120310001300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120310001300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138283141500).

120310001300 is an abundant number, since it is smaller than the sum of its proper divisors (156256281700).

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

120310001300 is a wasteful number, since it uses less digits than its factorization.

120310001300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34941 (or 34934 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 11.

Adding to 120310001300 its reverse (3100013021), we get a palindrome (123410014321).

The spelling of 120310001300 in words is "one hundred twenty billion, three hundred ten million, one thousand, three hundred".

Divisors: 1 2 4 5 10 17 20 25 34 50 68 85 100 170 340 425 850 1700 2161 4322 8644 10805 21610 32749 36737 43220 54025 65498 73474 108050 130996 146948 163745 183685 216100 327490 367370 556733 654980 734740 818725 918425 1113466 1637450 1836850 2226932 2783665 3274900 3673700 5567330 11134660 13918325 27836650 55673300 70770589 141541178 283082356 353852945 707705890 1203100013 1415411780 1769264725 2406200026 3538529450 4812400052 6015500065 7077058900 12031000130 24062000260 30077500325 60155000650 120310001300