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131282086 = 21331162881
BaseRepresentation
bin1111101001100…
…11010010100110
3100011000211011111
413310303102212
5232102011321
621005455234
73152610415
oct764632246
9304024144
10131282086
11681181a1
1237b7151a
1321277210
141361547c
15b7d35e1
hex7d334a6

131282086 has 16 divisors (see below), whose sum is σ = 218913408. Its totient is φ = 58636800.

The previous prime is 131282083. The next prime is 131282089. The reversal of 131282086 is 680282131.

It is an interprime number because it is at equal distance from previous prime (131282083) and next prime (131282089).

It is a super-2 number, since 2×1312820862 = 34469972209022792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131282083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80635 + ... + 82246.

It is an arithmetic number, because the mean of its divisors is an integer number (13682088).

Almost surely, 2131282086 is an apocalyptic number.

131282086 is a deficient number, since it is larger than the sum of its proper divisors (87631322).

131282086 is a wasteful number, since it uses less digits than its factorization.

131282086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162927.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 131282086 is about 11457.8394996614. The cubic root of 131282086 is about 508.2395872155.

The spelling of 131282086 in words is "one hundred thirty-one million, two hundred eighty-two thousand, eighty-six".

Divisors: 1 2 13 26 31 62 403 806 162881 325762 2117453 4234906 5049311 10098622 65641043 131282086