Base | Representation |
---|---|
bin | 1111101000011… |
… | …10001111000111 |
3 | 100010202002222012 |
4 | 13310032033013 |
5 | 232032132221 |
6 | 21002324435 |
7 | 3151406054 |
oct | 764161707 |
9 | 303662865 |
10 | 131130311 |
11 | 68024164 |
12 | 37ab971b |
13 | 21223100 |
14 | 135b602b |
15 | b7a365b |
hex | 7d0e3c7 |
131130311 has 6 divisors (see below), whose sum is σ = 141993360. Its totient is φ = 121043208.
The previous prime is 131130287. The next prime is 131130313. The reversal of 131130311 is 113031131.
It is a happy number.
It is not a de Polignac number, because 131130311 - 26 = 131130247 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 (131130313) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 387791 + ... + 388128.
It is an arithmetic number, because the mean of its divisors is an integer number (23665560).
Almost surely, 2131130311 is an apocalyptic number.
131130311 is a deficient number, since it is larger than the sum of its proper divisors (10863049).
131130311 is an equidigital number, since it uses as much as digits as its factorization.
131130311 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 775945 (or 775932 counting only the distinct ones).
The product of its (nonzero) digits is 27, while the sum is 14.
The square root of 131130311 is about 11451.2143897492. The cubic root of 131130311 is about 508.0436533777.
Adding to 131130311 its reverse (113031131), we get a palindrome (244161442).
The spelling of 131130311 in words is "one hundred thirty-one million, one hundred thirty thousand, three hundred eleven".
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