Base | Representation |
---|---|
bin | 111101000011111110… |
… | …1010111101110110111 |
3 | 110112110200021202202222 |
4 | 1322013331113232313 |
5 | 4122023241443111 |
6 | 140123523352555 |
7 | 12321344605316 |
oct | 1720775275667 |
9 | 415420252688 |
10 | 131130031031 |
11 | 5068053617a |
12 | 214b722275b |
13 | c49a03b64c |
14 | 64bd5c427d |
15 | 362717c7db |
hex | 1e87f57bb7 |
131130031031 has 8 divisors (see below), whose sum is σ = 141245251584. Its totient is φ = 121382636760.
The previous prime is 131130031009. The next prime is 131130031049. The reversal of 131130031031 is 130130031131.
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 131130031031 - 210 = 131130030007 is a prime.
It is a super-2 number, since 2×1311300310312 (a number of 23 digits) contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131130031051) 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, 91955831 + ... + 91957256.
It is an arithmetic number, because the mean of its divisors is an integer number (17655656448).
Almost surely, 2131130031031 is an apocalyptic number.
131130031031 is a deficient number, since it is larger than the sum of its proper divisors (10115220553).
131130031031 is a wasteful number, since it uses less digits than its factorization.
131130031031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 183913141.
The product of its (nonzero) digits is 81, while the sum is 17.
Adding to 131130031031 its reverse (130130031131), we get a palindrome (261260062162).
The spelling of 131130031031 in words is "one hundred thirty-one billion, one hundred thirty million, thirty-one thousand, thirty-one".
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