Base | Representation |
---|---|
bin | 1111100111101… |
… | …01100001010111 |
3 | 100010112222002212 |
4 | 13303311201113 |
5 | 232020412304 |
6 | 21000224035 |
7 | 3150504656 |
oct | 763654127 |
9 | 303488085 |
10 | 131029079 |
11 | 67a650a5 |
12 | 37a6b01b |
13 | 211b8ccc |
14 | 1358b19d |
15 | b78366e |
hex | 7cf5857 |
131029079 has 2 divisors, whose sum is σ = 131029080. Its totient is φ = 131029078.
The previous prime is 131029069. The next prime is 131029103. The reversal of 131029079 is 970920131.
It is a happy number.
It is a weak prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-131029079 is a prime.
It is equal to p7433258 and since 131029079 and 7433258 have the same sum of digits, it is a Honaker prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (131029039) by changing a digit.
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 as a sum of consecutive naturals, namely, 65514539 + 65514540.
It is an arithmetic number, because the mean of its divisors is an integer number (65514540).
Almost surely, 2131029079 is an apocalyptic number.
131029079 is a deficient number, since it is larger than the sum of its proper divisors (1).
131029079 is an equidigital number, since it uses as much as digits as its factorization.
131029079 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 3402, while the sum is 32.
The square root of 131029079 is about 11446.7933937850. The cubic root of 131029079 is about 507.9128839289.
The spelling of 131029079 in words is "one hundred thirty-one million, twenty-nine thousand, seventy-nine".
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