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131220310113210 = 23589177832763661
BaseRepresentation
bin11101110101100000011011…
…111110001011101110111010
3122012121112120000210001100110
4131311200123332023232322
5114144403143342110320
61143025440034445150
736432232416421533
oct3565403376135672
9565545500701313
10131220310113210
11388a1248174a4a
12128734604337b6
13582b039876856
14245914dc5568a
15102851c35a5e0
hex77581bf8bbba

131220310113210 has 64 divisors (see below), whose sum is σ = 318485293251840. Its totient is φ = 34596955092480.

The previous prime is 131220310113197. The next prime is 131220310113257. The reversal of 131220310113210 is 12311013022131.

It is a super-3 number, since 3×1312203101132103 (a number of 43 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46098780 + ... + 48862440.

It is an arithmetic number, because the mean of its divisors is an integer number (4976332707060).

Almost surely, 2131220310113210 is an apocalyptic number.

131220310113210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131220310113210 is an abundant number, since it is smaller than the sum of its proper divisors (187264983138630).

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

131220310113210 is a wasteful number, since it uses less digits than its factorization.

131220310113210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2781543.

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

Adding to 131220310113210 its reverse (12311013022131), we get a palindrome (143531323135341).

The spelling of 131220310113210 in words is "one hundred thirty-one trillion, two hundred twenty billion, three hundred ten million, one hundred thirteen thousand, two hundred ten".

Divisors: 1 2 3 5 6 10 15 30 89 178 267 445 534 890 1335 2670 17783 35566 53349 88915 106698 177830 266745 533490 1582687 2763661 3165374 4748061 5527322 7913435 8290983 9496122 13818305 15826870 16581966 23740305 27636610 41454915 47480610 82909830 245965829 491931658 737897487 1229829145 1475794974 2459658290 3689487435 7378974870 49146183563 98292367126 147438550689 245730917815 294877101378 491461835630 737192753445 1474385506890 4374010337107 8748020674214 13122031011321 21870051685535 26244062022642 43740103371070 65610155056605 131220310113210