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131726371 = 77123733
BaseRepresentation
bin1111101100111…
…11110000100011
3100011212101121111
413312133300203
5232210220441
621023204151
73156440620
oct766376043
9304771544
10131726371
11683a0a77
1238146657
13213a14ca
14136cd347
15b870081
hex7d9fc23

131726371 has 12 divisors (see below), whose sum is σ = 152735536. Its totient is φ = 111288240.

The previous prime is 131726369. The next prime is 131726393. The reversal of 131726371 is 173627131.

It is not a de Polignac number, because 131726371 - 21 = 131726369 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131726311) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 33421 + ... + 37153.

Almost surely, 2131726371 is an apocalyptic number.

131726371 is a deficient number, since it is larger than the sum of its proper divisors (21009165).

131726371 is an frugal number, since it uses more digits than its factorization.

131726371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3882 (or 3811 counting only the distinct ones).

The product of its digits is 5292, while the sum is 31.

The square root of 131726371 is about 11477.2109416879. The cubic root of 131726371 is about 508.8122700253.

The spelling of 131726371 in words is "one hundred thirty-one million, seven hundred twenty-six thousand, three hundred seventy-one".

Divisors: 1 7 71 497 3733 5041 26131 35287 265043 1855301 18818053 131726371