Base | Representation |
---|---|
bin | 1111101011000… |
… | …11011100001111 |
3 | 100011101211201010 |
4 | 13311203130033 |
5 | 232124314221 |
6 | 21014020303 |
7 | 3154361415 |
oct | 765433417 |
9 | 304354633 |
10 | 131479311 |
11 | 68242397 |
12 | 38047693 |
13 | 21315c12 |
14 | 136672b5 |
15 | b821c76 |
hex | 7d6370f |
131479311 has 8 divisors (see below), whose sum is σ = 176585904. Its totient is φ = 87012800.
The previous prime is 131479307. The next prime is 131479319. The reversal of 131479311 is 113974131.
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 131479311 - 22 = 131479307 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131479319) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159540 + ... + 160361.
It is an arithmetic number, because the mean of its divisors is an integer number (22073238).
Almost surely, 2131479311 is an apocalyptic number.
131479311 is a deficient number, since it is larger than the sum of its proper divisors (45106593).
131479311 is a wasteful number, since it uses less digits than its factorization.
131479311 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 320041.
The product of its digits is 2268, while the sum is 30.
The square root of 131479311 is about 11466.4428224275. The cubic root of 131479311 is about 508.4939692156.
The spelling of 131479311 in words is "one hundred thirty-one million, four hundred seventy-nine thousand, three hundred eleven".
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