Base | Representation |
---|---|
bin | 1111100111101… |
… | …00011000011111 |
3 | 100010112201201010 |
4 | 13303310120133 |
5 | 232020240130 |
6 | 21000150303 |
7 | 3150455244 |
oct | 763643037 |
9 | 303481633 |
10 | 131024415 |
11 | 67a61645 |
12 | 37a68393 |
13 | 211b6b52 |
14 | 135895cb |
15 | b7820b0 |
hex | 7cf461f |
131024415 has 16 divisors (see below), whose sum is σ = 212512608. Its totient is φ = 68921856.
The previous prime is 131024393. The next prime is 131024429. The reversal of 131024415 is 514420131.
It is a de Polignac number, because none of the positive numbers 2k-131024415 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 131024391 and 131024400.
It is a congruent number.
It is an unprimeable number.
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 in 15 ways as a sum of consecutive naturals, for example, 58734 + ... + 60923.
It is an arithmetic number, because the mean of its divisors is an integer number (13282038).
Almost surely, 2131024415 is an apocalyptic number.
131024415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
131024415 is a deficient number, since it is larger than the sum of its proper divisors (81488193).
131024415 is a wasteful number, since it uses less digits than its factorization.
131024415 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 119738.
The product of its (nonzero) digits is 480, while the sum is 21.
The square root of 131024415 is about 11446.5896667960. The cubic root of 131024415 is about 507.9068574453.
Adding to 131024415 its reverse (514420131), we get a palindrome (645444546).
The spelling of 131024415 in words is "one hundred thirty-one million, twenty-four thousand, four hundred fifteen".
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