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131450 = 25211239
BaseRepresentation
bin100000000101111010
320200022112
4200011322
513201300
62452322
71055144
oct400572
9220275
10131450
118a840
12640a2
1347aa7
1435c94
1528e35
hex2017a

131450 has 24 divisors (see below), whose sum is σ = 267840. Its totient is φ = 47600.

The previous prime is 131449. The next prime is 131477. The reversal of 131450 is 54131.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 431 + ... + 669.

It is an arithmetic number, because the mean of its divisors is an integer number (11160).

2131450 is an apocalyptic number.

131450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131450 is an abundant number, since it is smaller than the sum of its proper divisors (136390).

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

131450 is a wasteful number, since it uses less digits than its factorization.

131450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 131450 is about 362.5603398057. The cubic root of 131450 is about 50.8456179812.

Adding to 131450 its reverse (54131), we get a palindrome (185581).

The spelling of 131450 in words is "one hundred thirty-one thousand, four hundred fifty".

Divisors: 1 2 5 10 11 22 25 50 55 110 239 275 478 550 1195 2390 2629 5258 5975 11950 13145 26290 65725 131450