Base | Representation |
---|---|
bin | 1111100111101… |
… | …01101111010111 |
3 | 100010120000100001 |
4 | 13303311233113 |
5 | 232020424400 |
6 | 21000232131 |
7 | 3150510406 |
oct | 763655727 |
9 | 303500301 |
10 | 131029975 |
11 | 67a6583a |
12 | 37a6b647 |
13 | 211b953b |
14 | 1358b63d |
15 | b783a6a |
hex | 7cf5bd7 |
131029975 has 12 divisors (see below), whose sum is σ = 168080760. Its totient is φ = 101208800.
The previous prime is 131029967. The next prime is 131029993. The reversal of 131029975 is 579920131.
It is not a de Polignac number, because 131029975 - 23 = 131029967 is a prime.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89641 + ... + 91090.
It is an arithmetic number, because the mean of its divisors is an integer number (14006730).
Almost surely, 2131029975 is an apocalyptic number.
131029975 is a deficient number, since it is larger than the sum of its proper divisors (37050785).
131029975 is a wasteful number, since it uses less digits than its factorization.
131029975 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 180770 (or 180765 counting only the distinct ones).
The product of its (nonzero) digits is 17010, while the sum is 37.
The square root of 131029975 is about 11446.8325313163. The cubic root of 131029975 is about 507.9140416590.
The spelling of 131029975 in words is "one hundred thirty-one million, twenty-nine thousand, nine hundred seventy-five".
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