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131585308 = 22131251117
BaseRepresentation
bin1111101011111…
…01010100011100
3100011121020002221
413311331110130
5232141212213
621020155124
73155312431
oct765752434
9304536087
10131585308
1168304a98
1238098aa4
132135223a
1413693b88
15b84338d
hex7d7d51c

131585308 has 12 divisors (see below), whose sum is σ = 232033032. Its totient is φ = 65290160.

The previous prime is 131585299. The next prime is 131585329. The reversal of 131585308 is 803585131.

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 3 ways as a sum of consecutive naturals, for example, 125035 + ... + 126082.

It is an arithmetic number, because the mean of its divisors is an integer number (19336086).

Almost surely, 2131585308 is an apocalyptic number.

It is an amenable number.

131585308 is a deficient number, since it is larger than the sum of its proper divisors (100447724).

131585308 is a wasteful number, since it uses less digits than its factorization.

131585308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251252 (or 251250 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 131585308 is about 11471.0639436802. The cubic root of 131585308 is about 508.6305797011.

The spelling of 131585308 in words is "one hundred thirty-one million, five hundred eighty-five thousand, three hundred eight".

Divisors: 1 2 4 131 262 524 251117 502234 1004468 32896327 65792654 131585308