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131364580 = 2256568229
BaseRepresentation
bin1111101010001…
…11011011100100
3100011012000022211
413311013123210
5232112131310
621011333204
73153403054
oct765073344
9304160284
10131364580
1168174176
1237bb1204
13212a5929
1413637564
15b7ecc8a
hex7d476e4

131364580 has 12 divisors (see below), whose sum is σ = 275865660. Its totient is φ = 52545824.

The previous prime is 131364547. The next prime is 131364587. The reversal of 131364580 is 85463131.

It can be written as a sum of positive squares in 2 ways, for example, as 91699776 + 39664804 = 9576^2 + 6298^2 .

It is not an unprimeable number, because it can be changed into a prime (131364587) 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, 3284095 + ... + 3284134.

It is an arithmetic number, because the mean of its divisors is an integer number (22988805).

Almost surely, 2131364580 is an apocalyptic number.

131364580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131364580 is an abundant number, since it is smaller than the sum of its proper divisors (144501080).

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

131364580 is a wasteful number, since it uses less digits than its factorization.

131364580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6568238 (or 6568236 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 131364580 is about 11461.4388276516. The cubic root of 131364580 is about 508.3460194511.

The spelling of 131364580 in words is "one hundred thirty-one million, three hundred sixty-four thousand, five hundred eighty".

Divisors: 1 2 4 5 10 20 6568229 13136458 26272916 32841145 65682290 131364580