Base | Representation |
---|---|
bin | 1111100111101… |
… | …00001101100001 |
3 | 100010112200202010 |
4 | 13303310031201 |
5 | 232020224323 |
6 | 21000143133 |
7 | 3150453222 |
oct | 763641541 |
9 | 303480663 |
10 | 131023713 |
11 | 67a61067 |
12 | 37a67aa9 |
13 | 211b6732 |
14 | 13589249 |
15 | b781c93 |
hex | 7cf4361 |
131023713 has 8 divisors (see below), whose sum is σ = 175348800. Its totient is φ = 87023888.
The previous prime is 131023703. The next prime is 131023721. The reversal of 131023713 is 317320131.
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 131023713 - 25 = 131023681 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 131023713.
It is not an unprimeable number, because it can be changed into a prime (131023703) 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, 80373 + ... + 81986.
It is an arithmetic number, because the mean of its divisors is an integer number (21918600).
Almost surely, 2131023713 is an apocalyptic number.
It is an amenable number.
131023713 is a deficient number, since it is larger than the sum of its proper divisors (44325087).
131023713 is a wasteful number, since it uses less digits than its factorization.
131023713 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 162631.
The product of its (nonzero) digits is 378, while the sum is 21.
The square root of 131023713 is about 11446.5590025999. The cubic root of 131023713 is about 507.9059503593.
Adding to 131023713 its reverse (317320131), we get a palindrome (448343844).
The spelling of 131023713 in words is "one hundred thirty-one million, twenty-three thousand, seven hundred thirteen".
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