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131302130 = 25121710789
BaseRepresentation
bin1111101001110…
…00001011110010
3100011001211122212
413310320023302
5232103132010
621010132122
73153023021
oct764701362
9304054585
10131302130
1168131263
1237b81042
132128338b
141361c8b8
15b7d9505
hex7d382f2

131302130 has 16 divisors (see below), whose sum is σ = 236559960. Its totient is φ = 52472832.

The previous prime is 131302117. The next prime is 131302139. The reversal of 131302130 is 31203131.

It can be written as a sum of positive squares in 4 ways, for example, as 92948881 + 38353249 = 9641^2 + 6193^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131302139) 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, 6776 + ... + 17564.

Almost surely, 2131302130 is an apocalyptic number.

131302130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131302130 is a deficient number, since it is larger than the sum of its proper divisors (105257830).

131302130 is a wasteful number, since it uses less digits than its factorization.

131302130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12013.

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

The square root of 131302130 is about 11458.7141512475. The cubic root of 131302130 is about 508.2654517138.

Adding to 131302130 its reverse (31203131), we get a palindrome (162505261).

The spelling of 131302130 in words is "one hundred thirty-one million, three hundred two thousand, one hundred thirty".

Divisors: 1 2 5 10 1217 2434 6085 10789 12170 21578 53945 107890 13130213 26260426 65651065 131302130