Base | Representation |
---|---|
bin | 1111100111101… |
… | …10000001100101 |
3 | 100010120001221020 |
4 | 13303312001211 |
5 | 232020444031 |
6 | 21000241353 |
7 | 3150513663 |
oct | 763660145 |
9 | 303501836 |
10 | 131031141 |
11 | 67a666aa |
12 | 37a70259 |
13 | 211b9c27 |
14 | 1358bc33 |
15 | b784096 |
hex | 7cf6065 |
131031141 has 16 divisors (see below), whose sum is σ = 182108160. Its totient is φ = 83709360.
The previous prime is 131031137. The next prime is 131031167. The reversal of 131031141 is 141130131.
It is not a de Polignac number, because 131031141 - 22 = 131031137 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 131031141.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131031181) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2740 + ... + 16418.
It is an arithmetic number, because the mean of its divisors is an integer number (11381760).
Almost surely, 2131031141 is an apocalyptic number.
It is an amenable number.
131031141 is a deficient number, since it is larger than the sum of its proper divisors (51077019).
131031141 is a wasteful number, since it uses less digits than its factorization.
131031141 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 13816.
The product of its (nonzero) digits is 36, while the sum is 15.
The square root of 131031141 is about 11446.8834623228. The cubic root of 131031141 is about 507.9155482507.
Adding to 131031141 its reverse (141130131), we get a palindrome (272161272).
The spelling of 131031141 in words is "one hundred thirty-one million, thirty-one thousand, one hundred forty-one".
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