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131290 = 2519691
BaseRepresentation
bin100000000011011010
320200002121
4200003122
513200130
62451454
71054525
oct400332
9220077
10131290
118a705
1263b8a
13479b3
1435bbc
1528d7a
hex200da

131290 has 16 divisors (see below), whose sum is σ = 249120. Its totient is φ = 49680.

The previous prime is 131267. The next prime is 131293. The reversal of 131290 is 92131.

It is a plaindrome in base 14.

It is a zygodrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (131293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156 + ... + 535.

It is an arithmetic number, because the mean of its divisors is an integer number (15570).

2131290 is an apocalyptic number.

131290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131290 is a deficient number, since it is larger than the sum of its proper divisors (117830).

131290 is a wasteful number, since it uses less digits than its factorization.

131290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 131290 is about 362.3396196940. The cubic root of 131290 is about 50.8249799645.

The spelling of 131290 in words is "one hundred thirty-one thousand, two hundred ninety".

Divisors: 1 2 5 10 19 38 95 190 691 1382 3455 6910 13129 26258 65645 131290