Base | Representation |
---|---|
bin | 1111101001000… |
… | …01101100011101 |
3 | 100010220011022010 |
4 | 13310201230131 |
5 | 232042210023 |
6 | 21004141433 |
7 | 3152160324 |
oct | 764415435 |
9 | 303804263 |
10 | 131210013 |
11 | 68079030 |
12 | 37b37879 |
13 | 2125047c |
14 | 135d70bb |
15 | b7bc093 |
hex | 7d21b1d |
131210013 has 8 divisors (see below), whose sum is σ = 190850976. Its totient is φ = 79521200.
The previous prime is 131209997. The next prime is 131210021. The reversal of 131210013 is 310012131.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 131210013 - 24 = 131209997 is a prime.
It is a super-2 number, since 2×1312100132 = 34432135022920338, which contains 22 as substring.
It is a Curzon number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131210083) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1987998 + ... + 1988063.
It is an arithmetic number, because the mean of its divisors is an integer number (23856372).
Almost surely, 2131210013 is an apocalyptic number.
It is an amenable number.
131210013 is a deficient number, since it is larger than the sum of its proper divisors (59640963).
131210013 is a wasteful number, since it uses less digits than its factorization.
131210013 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3976075.
The product of its (nonzero) digits is 18, while the sum is 12.
The square root of 131210013 is about 11454.6939286914. The cubic root of 131210013 is about 508.1465634623.
Adding to 131210013 its reverse (310012131), we get a palindrome (441222144).
It can be divided in two parts, 1312 and 10013, that added together give a triangular number (11325 = T150).
The spelling of 131210013 in words is "one hundred thirty-one million, two hundred ten thousand, thirteen".
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