Base | Representation |
---|---|
bin | 1010010100000… |
… | …01011100010111 |
3 | 20000210100010011 |
4 | 11022001130113 |
5 | 134121412211 |
6 | 12330141051 |
7 | 2100231514 |
oct | 512013427 |
9 | 200710104 |
10 | 86513431 |
11 | 4491a904 |
12 | 24b81787 |
13 | 14c00ca4 |
14 | b6c030b |
15 | 78dd921 |
hex | 5281717 |
86513431 has 2 divisors, whose sum is σ = 86513432. Its totient is φ = 86513430.
The previous prime is 86513407. The next prime is 86513443. The reversal of 86513431 is 13431568.
It is a strong prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-86513431 is a prime.
It is a super-2 number, since 2×865134312 = 14969147486783522, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 86513393 and 86513402.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (86513491) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43256715 + 43256716.
It is an arithmetic number, because the mean of its divisors is an integer number (43256716).
Almost surely, 286513431 is an apocalyptic number.
86513431 is a deficient number, since it is larger than the sum of its proper divisors (1).
86513431 is an equidigital number, since it uses as much as digits as its factorization.
86513431 is an evil number, because the sum of its binary digits is even.
The product of its digits is 8640, while the sum is 31.
The square root of 86513431 is about 9301.2596458759. The cubic root of 86513431 is about 442.2771597610.
Adding to 86513431 its reverse (13431568), we get a palindrome (99944999).
The spelling of 86513431 in words is "eighty-six million, five hundred thirteen thousand, four hundred thirty-one".
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