131011 has 2 divisors, whose sum is σ = 131012. Its totient is φ = 131010.
The previous prime is 131009. The next prime is 131023. The reversal of 131011 is 110131.
It is a happy number.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 131011 - 21 = 131009 is a prime.
Together with 131009, it forms a pair of twin primes.
It is a zygodrome in base 2.
It is a junction number, because it is equal to n+sod(n) for n = 130985 and 131003.
It is not a weakly prime, because it can be changed into another prime (131041) 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 as a sum of consecutive naturals, namely, 65505 + 65506.
It is an arithmetic number, because the mean of its divisors is an integer number (65506).
2131011 is an apocalyptic number.
131011 is a deficient number, since it is larger than the sum of its proper divisors (1).
131011 is an equidigital number, since it uses as much as digits as its factorization.
131011 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 3, while the sum is 7.
The square root of 131011 is about 361.9544170196. The cubic root of 131011 is about 50.7889522755.
Adding to 131011 its reverse (110131), we get a palindrome (241142).
It can be divided in two parts, 13 and 1011, that added together give a 10-th power (1024 = 210).
The spelling of 131011 in words is "one hundred thirty-one thousand, eleven".
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