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131048 = 2316381
BaseRepresentation
bin11111111111101000
320122202122
4133333220
513143143
62450412
71054031
oct377750
9218678
10131048
118a505
1263a08
1347858
1435a88
1528c68
hex1ffe8

131048 has 8 divisors (see below), whose sum is σ = 245730. Its totient is φ = 65520.

The previous prime is 131041. The next prime is 131059. The reversal of 131048 is 840131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 131044 + 4 = 362^2 + 2^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (131041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8183 + ... + 8198.

2131048 is an apocalyptic number.

131048 is the 194-th centered heptagonal number.

It is an amenable number.

131048 is a deficient number, since it is larger than the sum of its proper divisors (114682).

131048 is a wasteful number, since it uses less digits than its factorization.

131048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16387 (or 16383 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 131048 is about 362.0055248197. The cubic root of 131048 is about 50.7937330811.

Adding to 131048 its reverse (840131), we get a palindrome (971179).

The spelling of 131048 in words is "one hundred thirty-one thousand, forty-eight".

Divisors: 1 2 4 8 16381 32762 65524 131048