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130643131 is a prime number
BaseRepresentation
bin1111100100101…
…11010010111011
3100002211100200111
413302113102323
5231421040011
620544045151
73144306523
oct762272273
9302740614
10130643131
1167821133
12379037b7
13210b2438
14134ca683
15b709121
hex7c974bb

130643131 has 2 divisors, whose sum is σ = 130643132. Its totient is φ = 130643130.

The previous prime is 130643129. The next prime is 130643137. The reversal of 130643131 is 131346031.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 130643131 - 21 = 130643129 is a prime.

It is a super-2 number, since 2×1306431312 = 34135255354966322, which contains 22 as substring.

Together with 130643129, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (130643137) 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 as a sum of consecutive naturals, namely, 65321565 + 65321566.

It is an arithmetic number, because the mean of its divisors is an integer number (65321566).

Almost surely, 2130643131 is an apocalyptic number.

130643131 is a deficient number, since it is larger than the sum of its proper divisors (1).

130643131 is an equidigital number, since it uses as much as digits as its factorization.

130643131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 130643131 is about 11429.9226156611. The cubic root of 130643131 is about 507.4137053076.

Adding to 130643131 its reverse (131346031), we get a palindrome (261989162).

The spelling of 130643131 in words is "one hundred thirty million, six hundred forty-three thousand, one hundred thirty-one".