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131200124 = 22114763443
BaseRepresentation
bin1111101000111…
…11010001111100
3100010212122201212
413310133101330
5232041400444
621004023552
73152116436
oct764372174
9303778655
10131200124
1168071660
1237b31bb8
1321248b13
14135d3656
15b7b919e
hex7d1f47c

131200124 has 24 divisors (see below), whose sum is σ = 255806208. Its totient is φ = 58366640.

The previous prime is 131200117. The next prime is 131200141. The reversal of 131200124 is 421002131.

It is a junction number, because it is equal to n+sod(n) for n = 131200099 and 131200108.

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 7 ways as a sum of consecutive naturals, for example, 29654 + ... + 33789.

It is an arithmetic number, because the mean of its divisors is an integer number (10658592).

Almost surely, 2131200124 is an apocalyptic number.

It is an amenable number.

131200124 is a deficient number, since it is larger than the sum of its proper divisors (124606084).

131200124 is a wasteful number, since it uses less digits than its factorization.

131200124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63505 (or 63503 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 131200124 is about 11454.2622634546. The cubic root of 131200124 is about 508.1337971917.

Adding to 131200124 its reverse (421002131), we get a palindrome (552202255).

The spelling of 131200124 in words is "one hundred thirty-one million, two hundred thousand, one hundred twenty-four".

Divisors: 1 2 4 11 22 44 47 94 188 517 1034 2068 63443 126886 253772 697873 1395746 2791492 2981821 5963642 11927284 32800031 65600062 131200124