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131043230 = 25131167599
BaseRepresentation
bin1111100111110…
…00111110011110
3100010120200111222
413303320332132
5232021340410
621000413342
73150564143
oct763707636
9303520458
10131043230
1167a7479a
1237a77252
13211c2596
14135923ca
15b787955
hex7cf8f9e

131043230 has 32 divisors (see below), whose sum is σ = 239500800. Its totient is φ = 51619360.

The previous prime is 131043229. The next prime is 131043251. The reversal of 131043230 is 32340131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 131043199 and 131043208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218471 + ... + 219069.

It is an arithmetic number, because the mean of its divisors is an integer number (7484400).

Almost surely, 2131043230 is an apocalyptic number.

131043230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131043230 is a deficient number, since it is larger than the sum of its proper divisors (108457570).

131043230 is a wasteful number, since it uses less digits than its factorization.

131043230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 131043230 is about 11447.4114978016. The cubic root of 131043230 is about 507.9311679530.

Adding to 131043230 its reverse (32340131), we get a palindrome (163383361).

The spelling of 131043230 in words is "one hundred thirty-one million, forty-three thousand, two hundred thirty".

Divisors: 1 2 5 10 131 167 262 334 599 655 835 1198 1310 1670 2995 5990 21877 43754 78469 100033 109385 156938 200066 218770 392345 500165 784690 1000330 13104323 26208646 65521615 131043230