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131130255 = 3571123127
BaseRepresentation
bin1111101000011…
…10001110001111
3100010202002220010
413310032032033
5232032132010
621002324303
73151405644
oct764161617
9303662803
10131130255
1168024113
1237ab9693
1321223089
14135b5dcb
15b7a3620
hex7d0e38f

131130255 has 16 divisors (see below), whose sum is σ = 212765184. Its totient is φ = 68950560.

The previous prime is 131130253. The next prime is 131130277. The reversal of 131130255 is 552031131.

It is not a de Polignac number, because 131130255 - 21 = 131130253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131130253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60499 + ... + 62628.

It is an arithmetic number, because the mean of its divisors is an integer number (13297824).

Almost surely, 2131130255 is an apocalyptic number.

131130255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131130255 is a deficient number, since it is larger than the sum of its proper divisors (81634929).

131130255 is a wasteful number, since it uses less digits than its factorization.

131130255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123206.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 131130255 is about 11451.2119445935. The cubic root of 131130255 is about 508.0435810566.

Adding to 131130255 its reverse (552031131), we get a palindrome (683161386).

The spelling of 131130255 in words is "one hundred thirty-one million, one hundred thirty thousand, two hundred fifty-five".

Divisors: 1 3 5 15 71 213 355 1065 123127 369381 615635 1846905 8742017 26226051 43710085 131130255