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131100538 = 2425915391
BaseRepresentation
bin1111101000001…
…10111101111010
3100010200121010111
413310012331322
5232030204123
621001534534
73151223212
oct764067572
9303617114
10131100538
1168003858
1237aa444a
13212126aa
14135a9242
15b79990d
hex7d06f7a

131100538 has 8 divisors (see below), whose sum is σ = 196709760. Its totient is φ = 65530620.

The previous prime is 131100527. The next prime is 131100539. The reversal of 131100538 is 835001131.

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

It is not an unprimeable number, because it can be changed into a prime (131100539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 823 + ... + 16213.

It is an arithmetic number, because the mean of its divisors is an integer number (24588720).

Almost surely, 2131100538 is an apocalyptic number.

131100538 is a deficient number, since it is larger than the sum of its proper divisors (65609222).

131100538 is a wasteful number, since it uses less digits than its factorization.

131100538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19652.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 131100538 is about 11449.9143228236. The cubic root of 131100538 is about 508.0052002072.

Adding to 131100538 its reverse (835001131), we get a palindrome (966101669).

The spelling of 131100538 in words is "one hundred thirty-one million, one hundred thousand, five hundred thirty-eight".

Divisors: 1 2 4259 8518 15391 30782 65550269 131100538