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131130230 = 25711170299
BaseRepresentation
bin1111101000011…
…10001101110110
3100010202002212012
413310032031312
5232032131410
621002324222
73151405610
oct764161566
9303662765
10131130230
11680240a0
1237ab9672
132122306a
14135b5db0
15b7a3605
hex7d0e376

131130230 has 32 divisors (see below), whose sum is σ = 294278400. Its totient is φ = 40871520.

The previous prime is 131130211. The next prime is 131130239. The reversal of 131130230 is 32031131.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131130239) 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, 84380 + ... + 85919.

It is an arithmetic number, because the mean of its divisors is an integer number (9196200).

Almost surely, 2131130230 is an apocalyptic number.

131130230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131130230 is an abundant number, since it is smaller than the sum of its proper divisors (163148170).

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

131130230 is a wasteful number, since it uses less digits than its factorization.

131130230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170324.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 131130230 is about 11451.2108530059. The cubic root of 131130230 is about 508.0435487704.

Adding to 131130230 its reverse (32031131), we get a palindrome (163161361).

Subtracting from 131130230 its reverse (32031131), we obtain a palindrome (99099099).

The spelling of 131130230 in words is "one hundred thirty-one million, one hundred thirty thousand, two hundred thirty".

Divisors: 1 2 5 7 10 11 14 22 35 55 70 77 110 154 385 770 170299 340598 851495 1192093 1702990 1873289 2384186 3746578 5960465 9366445 11920930 13113023 18732890 26226046 65565115 131130230