Base | Representation |
---|---|
bin | 1111100111101… |
… | …01110001110011 |
3 | 100010120000112211 |
4 | 13303311301303 |
5 | 232020431011 |
6 | 21000232551 |
7 | 3150511021 |
oct | 763656163 |
9 | 303500484 |
10 | 131030131 |
11 | 67a65971 |
12 | 37a6b757 |
13 | 211b962b |
14 | 1358b711 |
15 | b783b21 |
hex | 7cf5c73 |
131030131 has 2 divisors, whose sum is σ = 131030132. Its totient is φ = 131030130.
The previous prime is 131030129. The next prime is 131030143.
It is a happy number.
131030131 is nontrivially palindromic in base 10.
It is a weak prime.
It is a palprime.
It is a cyclic number.
It is not a de Polignac number, because 131030131 - 21 = 131030129 is a prime.
It is a super-2 number, since 2×1310301312 = 34337790459754322, which contains 22 as substring.
Together with 131030129, it forms a pair of twin primes.
It is not a weakly prime, because it can be changed into another prime (131030171) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65515065 + 65515066.
It is an arithmetic number, because the mean of its divisors is an integer number (65515066).
Almost surely, 2131030131 is an apocalyptic number.
131030131 is a deficient number, since it is larger than the sum of its proper divisors (1).
131030131 is an equidigital number, since it uses as much as digits as its factorization.
131030131 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 27, while the sum is 13.
The square root of 131030131 is about 11446.8393454263. The cubic root of 131030131 is about 507.9142432275.
The spelling of 131030131 in words is "one hundred thirty-one million, thirty thousand, one hundred thirty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.074 sec. • engine limits •