Base | Representation |
---|---|
bin | 111101001111011000… |
… | …0111000100101001000 |
3 | 110120110100012222221011 |
4 | 1322132300320211020 |
5 | 4123314213234142 |
6 | 140225512053304 |
7 | 12334001641030 |
oct | 1723660704510 |
9 | 416410188834 |
10 | 131512633672 |
11 | 508574a9202 |
12 | 215a3394234 |
13 | c52b39b344 |
14 | 651833a8c0 |
15 | 364aa56417 |
hex | 1e9ec38948 |
131512633672 has 32 divisors (see below), whose sum is σ = 281842744320. Its totient is φ = 56356565760.
The previous prime is 131512633657. The next prime is 131512633673. The reversal of 131512633672 is 276336215131.
It is not an unprimeable number, because it can be changed into a prime (131512633673) 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, 428368 + ... + 668224.
It is an arithmetic number, because the mean of its divisors is an integer number (8807585760).
Almost surely, 2131512633672 is an apocalyptic number.
It is an amenable number.
131512633672 is an abundant number, since it is smaller than the sum of its proper divisors (150330110648).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
131512633672 is a wasteful number, since it uses less digits than its factorization.
131512633672 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 249661 (or 249657 counting only the distinct ones).
The product of its digits is 136080, while the sum is 40.
The spelling of 131512633672 in words is "one hundred thirty-one billion, five hundred twelve million, six hundred thirty-three thousand, six hundred seventy-two".
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