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131224282 = 2747199429
BaseRepresentation
bin1111101001001…
…01001011011010
3100010220212212121
413310211023122
5232043134112
621004331454
73152250040
oct764451332
9303825777
10131224282
1168088822
1237b43b8a
1321256b07
14135dc390
15b7c1407
hex7d252da

131224282 has 16 divisors (see below), whose sum is σ = 229743360. Its totient is φ = 55042128.

The previous prime is 131224277. The next prime is 131224283. The reversal of 131224282 is 282422131.

It is not an unprimeable number, because it can be changed into a prime (131224283) 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, 99057 + ... + 100372.

It is an arithmetic number, because the mean of its divisors is an integer number (14358960).

Almost surely, 2131224282 is an apocalyptic number.

131224282 is a deficient number, since it is larger than the sum of its proper divisors (98519078).

131224282 is a wasteful number, since it uses less digits than its factorization.

131224282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199485.

The product of its digits is 1536, while the sum is 25.

The square root of 131224282 is about 11455.3167568601. The cubic root of 131224282 is about 508.1649829928.

The spelling of 131224282 in words is "one hundred thirty-one million, two hundred twenty-four thousand, two hundred eighty-two".

Divisors: 1 2 7 14 47 94 329 658 199429 398858 1396003 2792006 9373163 18746326 65612141 131224282