Base | Representation |
---|---|
bin | 1111101000100… |
… | …11001001011111 |
3 | 100010210010120101 |
4 | 13310103021133 |
5 | 232033303211 |
6 | 21003001531 |
7 | 3151521526 |
oct | 764231137 |
9 | 303703511 |
10 | 131150431 |
11 | 68038295 |
12 | 37b092a7 |
13 | 2122c309 |
14 | 135bd4bd |
15 | b7a95c1 |
hex | 7d1325f |
131150431 has 8 divisors (see below), whose sum is σ = 134500464. Its totient is φ = 127807680.
The previous prime is 131150389. The next prime is 131150447. The reversal of 131150431 is 134051131.
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 131150431 - 27 = 131150303 is a prime.
It is a super-2 number, since 2×1311504312 = 34400871102971522, which contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 131150399 and 131150408.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131150231) 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, 64476 + ... + 66478.
It is an arithmetic number, because the mean of its divisors is an integer number (16812558).
Almost surely, 2131150431 is an apocalyptic number.
131150431 is a deficient number, since it is larger than the sum of its proper divisors (3350033).
131150431 is a wasteful number, since it uses less digits than its factorization.
131150431 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3641.
The product of its (nonzero) digits is 180, while the sum is 19.
The square root of 131150431 is about 11452.0928654984. The cubic root of 131150431 is about 508.0696359682.
The spelling of 131150431 in words is "one hundred thirty-one million, one hundred fifty thousand, four hundred thirty-one".
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