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131240011 = 719986767
BaseRepresentation
bin1111101001010…
…01000001001011
3100010221200110011
413310221001023
5232044140021
621004532351
73152343640
oct764510113
9303850404
10131240011
1168099621
1237b510b7
1321261016
1413603dc7
15b7c5de1
hex7d2904b

131240011 has 8 divisors (see below), whose sum is σ = 157882880. Its totient is φ = 106570728.

The previous prime is 131240003. The next prime is 131240041. The reversal of 131240011 is 110042131.

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

It is a cyclic number.

It is not a de Polignac number, because 131240011 - 23 = 131240003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131239973 and 131240000.

It is not an unprimeable number, because it can be changed into a prime (131240041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 493251 + ... + 493516.

It is an arithmetic number, because the mean of its divisors is an integer number (19735360).

Almost surely, 2131240011 is an apocalyptic number.

131240011 is a deficient number, since it is larger than the sum of its proper divisors (26642869).

131240011 is an equidigital number, since it uses as much as digits as its factorization.

131240011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986793.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 131240011 is about 11456.0032733934. The cubic root of 131240011 is about 508.1852856572.

Adding to 131240011 its reverse (110042131), we get a palindrome (241282142).

The spelling of 131240011 in words is "one hundred thirty-one million, two hundred forty thousand, eleven".

Divisors: 1 7 19 133 986767 6907369 18748573 131240011