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131306680 = 2353282667
BaseRepresentation
bin1111101001110…
…01010010111000
3100011002001220101
413310321102320
5232103303210
621010205144
73153042211
oct764712270
9304061811
10131306680
116813471a
1237b837b4
132128547b
1413620408
15b7daa3a
hex7d394b8

131306680 has 16 divisors (see below), whose sum is σ = 295440120. Its totient is φ = 52522656.

The previous prime is 131306677. The next prime is 131306687. The reversal of 131306680 is 86603131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131306687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1641294 + ... + 1641373.

Almost surely, 2131306680 is an apocalyptic number.

131306680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131306680 is an abundant number, since it is smaller than the sum of its proper divisors (164133440).

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

131306680 is a wasteful number, since it uses less digits than its factorization.

131306680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3282678 (or 3282674 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 131306680 is about 11458.9126883837. The cubic root of 131306680 is about 508.2713226038.

The spelling of 131306680 in words is "one hundred thirty-one million, three hundred six thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 3282667 6565334 13130668 16413335 26261336 32826670 65653340 131306680