Base | Representation |
---|---|
bin | 1111101001001… |
… | …10100101010001 |
3 | 100010221011202121 |
4 | 13310212211101 |
5 | 232043330113 |
6 | 21004414241 |
7 | 3152302564 |
oct | 764464521 |
9 | 303834677 |
10 | 131230033 |
11 | 68092080 |
12 | 37b47381 |
13 | 2125960c |
14 | 136004db |
15 | b7c2e8d |
hex | 7d26951 |
131230033 has 8 divisors (see below), whose sum is σ = 143278560. Its totient is φ = 119201280.
The previous prime is 131230003. The next prime is 131230049. The reversal of 131230033 is 330032131.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 131230033 - 221 = 129132881 is a prime.
It is a super-2 number, since 2×1312300332 = 34442643122362178, which contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 131229989 and 131230016.
It is not an unprimeable number, because it can be changed into a prime (131230003) 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, 11266 + ... + 19732.
It is an arithmetic number, because the mean of its divisors is an integer number (17909820).
Almost surely, 2131230033 is an apocalyptic number.
It is an amenable number.
131230033 is a deficient number, since it is larger than the sum of its proper divisors (12048527).
131230033 is a wasteful number, since it uses less digits than its factorization.
131230033 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 9887.
The product of its (nonzero) digits is 162, while the sum is 16.
The square root of 131230033 is about 11455.5677729216. The cubic root of 131230033 is about 508.1724064515.
Adding to 131230033 its reverse (330032131), we get a palindrome (461262164).
The spelling of 131230033 in words is "one hundred thirty-one million, two hundred thirty thousand, thirty-three".
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