Base | Representation |
---|---|
bin | 1111100111100… |
… | …00011101111011 |
3 | 100010111220201012 |
4 | 13303300131323 |
5 | 232014232004 |
6 | 20555544135 |
7 | 3150360425 |
oct | 763603573 |
9 | 303456635 |
10 | 131008379 |
11 | 67a50597 |
12 | 37a5b04b |
13 | 211ac768 |
14 | 13583815 |
15 | b77c46e |
hex | 7cf077b |
131008379 has 8 divisors (see below), whose sum is σ = 136831920. Its totient is φ = 125305056.
The previous prime is 131008351. The next prime is 131008393. The reversal of 131008379 is 973800131.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 131008379 - 212 = 131004283 is a prime.
It is not an unprimeable number, because it can be changed into a prime (131008309) 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, 27824 + ... + 32189.
It is an arithmetic number, because the mean of its divisors is an integer number (17103990).
Almost surely, 2131008379 is an apocalyptic number.
131008379 is a deficient number, since it is larger than the sum of its proper divisors (5823541).
131008379 is an equidigital number, since it uses as much as digits as its factorization.
131008379 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 60109.
The product of its (nonzero) digits is 4536, while the sum is 32.
The square root of 131008379 is about 11445.8891747212. The cubic root of 131008379 is about 507.8861357941.
The spelling of 131008379 in words is "one hundred thirty-one million, eight thousand, three hundred seventy-nine".
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