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131058 = 234809
BaseRepresentation
bin11111111111110010
320122210000
4133333302
513143213
62450430
71054044
oct377762
9218700
10131058
118a514
1263a16
1347865
1435a94
1528c73
hex1fff2

131058 has 20 divisors (see below), whose sum is σ = 294030. Its totient is φ = 43632.

The previous prime is 131041. The next prime is 131059. The reversal of 131058 is 850131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 88209 + 42849 = 297^2 + 207^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 131058.

It is not an unprimeable number, because it can be changed into a prime (131059) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 243 + ... + 566.

2131058 is an apocalyptic number.

131058 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

131058 is an abundant number, since it is smaller than the sum of its proper divisors (162972).

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

131058 is an equidigital number, since it uses as much as digits as its factorization.

131058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823 (or 814 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 131058 is about 362.0193365001. The cubic root of 131058 is about 50.7950250362.

Adding to 131058 its reverse (850131), we get a palindrome (981189).

The spelling of 131058 in words is "one hundred thirty-one thousand, fifty-eight".

Divisors: 1 2 3 6 9 18 27 54 81 162 809 1618 2427 4854 7281 14562 21843 43686 65529 131058