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131055 = 358737
BaseRepresentation
bin11111111111101111
320122202220
4133333233
513143210
62450423
71054041
oct377757
9218686
10131055
118a511
1263a13
1347862
1435a91
1528c70
hex1ffef

131055 has 8 divisors (see below), whose sum is σ = 209712. Its totient is φ = 69888.

The previous prime is 131041. The next prime is 131059. The reversal of 131055 is 550131.

Adding to 131055 its reverse (550131), we get a palindrome (681186).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131055 - 25 = 131023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 8737 = 131055 / (1 + 3 + 1 + 0 + 5 + 5).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 4354 + ... + 4383.

It is an arithmetic number, because the mean of its divisors is an integer number (26214).

2131055 is an apocalyptic number.

131055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131055 is a deficient number, since it is larger than the sum of its proper divisors (78657).

131055 is an equidigital number, since it uses as much as digits as its factorization.

131055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8745.

The product of its (nonzero) digits is 75, while the sum is 15.

The square root of 131055 is about 362.0151930513. The cubic root of 131055 is about 50.7946374565.

The spelling of 131055 in words is "one hundred thirty-one thousand, fifty-five".

Divisors: 1 3 5 15 8737 26211 43685 131055