Base | Representation |
---|---|
bin | 1111101001100… |
… | …00110110100101 |
3 | 100011000022110200 |
4 | 13310300312211 |
5 | 232101201401 |
6 | 21005341113 |
7 | 3152536332 |
oct | 764606645 |
9 | 304008420 |
10 | 131272101 |
11 | 68110744 |
12 | 37b67799 |
13 | 212727cc |
14 | 13611989 |
15 | b7d0686 |
hex | 7d30da5 |
131272101 has 12 divisors (see below), whose sum is σ = 190115328. Its totient is φ = 87283944.
The previous prime is 131272093. The next prime is 131272103. The reversal of 131272101 is 101272131.
It is a happy number.
It is not a de Polignac number, because 131272101 - 23 = 131272093 is a prime.
It is a Curzon number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131272103) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15595 + ... + 22488.
It is an arithmetic number, because the mean of its divisors is an integer number (15842944).
Almost surely, 2131272101 is an apocalyptic number.
It is an amenable number.
131272101 is a deficient number, since it is larger than the sum of its proper divisors (58843227).
131272101 is a wasteful number, since it uses less digits than its factorization.
131272101 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 38472 (or 38469 counting only the distinct ones).
The product of its (nonzero) digits is 84, while the sum is 18.
The square root of 131272101 is about 11457.4037635059. The cubic root of 131272101 is about 508.2267017282.
The spelling of 131272101 in words is "one hundred thirty-one million, two hundred seventy-two thousand, one hundred one".
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