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131432 = 2372347
BaseRepresentation
bin100000000101101000
320200021212
4200011220
513201212
62452252
71055120
oct400550
9220255
10131432
118a824
1264088
1347a92
1435c80
1528e22
hex20168

131432 has 16 divisors (see below), whose sum is σ = 281760. Its totient is φ = 56304.

The previous prime is 131431. The next prime is 131437. The reversal of 131432 is 234131.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 131432.

It is not an unprimeable number, because it can be changed into a prime (131431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1118 + ... + 1229.

It is an arithmetic number, because the mean of its divisors is an integer number (17610).

2131432 is an apocalyptic number.

It is an amenable number.

131432 is an abundant number, since it is smaller than the sum of its proper divisors (150328).

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

131432 is a wasteful number, since it uses less digits than its factorization.

131432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2360 (or 2356 counting only the distinct ones).

The product of its digits is 72, while the sum is 14.

The square root of 131432 is about 362.5355155016. The cubic root of 131432 is about 50.8432970406.

Adding to 131432 its reverse (234131), we get a palindrome (365563).

The spelling of 131432 in words is "one hundred thirty-one thousand, four hundred thirty-two".

Divisors: 1 2 4 7 8 14 28 56 2347 4694 9388 16429 18776 32858 65716 131432