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131244104 = 2397169129
BaseRepresentation
bin1111101001010…
…10000001001000
3100010221220001202
413310222001020
5232044302404
621005003332
73152361605
oct764520110
9303856052
10131244104
11680a1702
1237b53548
1321262b44
14136056ac
15b7c721e
hex7d2a048

131244104 has 16 divisors (see below), whose sum is σ = 248621100. Its totient is φ = 64945152.

The previous prime is 131244037. The next prime is 131244119. The reversal of 131244104 is 401442131.

It can be written as a sum of positive squares in 2 ways, for example, as 120340900 + 10903204 = 10970^2 + 3302^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83789 + ... + 85340.

Almost surely, 2131244104 is an apocalyptic number.

It is an amenable number.

131244104 is a deficient number, since it is larger than the sum of its proper divisors (117376996).

131244104 is a wasteful number, since it uses less digits than its factorization.

131244104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169232 (or 169228 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 131244104 is about 11456.1819119635. The cubic root of 131244104 is about 508.1905685501.

Adding to 131244104 its reverse (401442131), we get a palindrome (532686235).

The spelling of 131244104 in words is "one hundred thirty-one million, two hundred forty-four thousand, one hundred four".

Divisors: 1 2 4 8 97 194 388 776 169129 338258 676516 1353032 16405513 32811026 65622052 131244104