Base | Representation |
---|---|
bin | 1111101010001… |
… | …10010111100111 |
3 | 100011011210100202 |
4 | 13311012113213 |
5 | 232112011411 |
6 | 21011301115 |
7 | 3153354302 |
oct | 765062747 |
9 | 304153322 |
10 | 131360231 |
11 | 68170982 |
12 | 37baa79b |
13 | 212a3962 |
14 | 13635b39 |
15 | b7eb83b |
hex | 7d465e7 |
131360231 has 2 divisors, whose sum is σ = 131360232. Its totient is φ = 131360230.
The previous prime is 131360221. The next prime is 131360261. The reversal of 131360231 is 132063131.
It is a happy number.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 131360231 - 214 = 131343847 is a prime.
It is a super-2 number, since 2×1313602312 = 34511020576746722, which contains 22 as substring.
It is a Sophie Germain prime.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (131360221) 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 as a sum of consecutive naturals, namely, 65680115 + 65680116.
It is an arithmetic number, because the mean of its divisors is an integer number (65680116).
Almost surely, 2131360231 is an apocalyptic number.
131360231 is a deficient number, since it is larger than the sum of its proper divisors (1).
131360231 is an equidigital number, since it uses as much as digits as its factorization.
131360231 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 324, while the sum is 20.
The square root of 131360231 is about 11461.2491029556. The cubic root of 131360231 is about 508.3404095644.
The spelling of 131360231 in words is "one hundred thirty-one million, three hundred sixty thousand, two hundred thirty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.109 sec. • engine limits •