Base | Representation |
---|---|
bin | 1111100111100… |
… | …11110010110111 |
3 | 100010112121101221 |
4 | 13303303302313 |
5 | 232020201012 |
6 | 21000131211 |
7 | 3150445234 |
oct | 763636267 |
9 | 303477357 |
10 | 131022007 |
11 | 67a5a856 |
12 | 37a66b07 |
13 | 211b5a1c |
14 | 1358878b |
15 | b781507 |
hex | 7cf3cb7 |
131022007 has 8 divisors (see below), whose sum is σ = 136956384. Its totient is φ = 125107488.
The previous prime is 131021999. The next prime is 131022011. The reversal of 131022007 is 700220131.
It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 131022007 - 23 = 131021999 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131022037) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9453 + ... + 18745.
It is an arithmetic number, because the mean of its divisors is an integer number (17119548).
Almost surely, 2131022007 is an apocalyptic number.
131022007 is a deficient number, since it is larger than the sum of its proper divisors (5934377).
131022007 is an equidigital number, since it uses as much as digits as its factorization.
131022007 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 9929.
The product of its (nonzero) digits is 84, while the sum is 16.
The square root of 131022007 is about 11446.4844821456. The cubic root of 131022007 is about 507.9037459458.
Adding to 131022007 its reverse (700220131), we get a palindrome (831242138).
The spelling of 131022007 in words is "one hundred thirty-one million, twenty-two thousand, seven".
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