Base | Representation |
---|---|
bin | 111101000011001001… |
… | …0110100101111001111 |
3 | 110112101201201202012022 |
4 | 1322012102310233033 |
5 | 4121444114203211 |
6 | 140121045000355 |
7 | 12320555316101 |
oct | 1720622645717 |
9 | 415351652168 |
10 | 131102100431 |
11 | 50666799535 |
12 | 214a99b30bb |
13 | c49430c573 |
14 | 64b99d3571 |
15 | 36249b1bdb |
hex | 1e864b4bcf |
131102100431 has 8 divisors (see below), whose sum is σ = 138020225280. Its totient is φ = 124185777048.
The previous prime is 131102100397. The next prime is 131102100439. The reversal of 131102100431 is 134001201131.
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 131102100431 - 210 = 131102099407 is a prime.
It is a super-4 number, since 4×1311021004314 (a number of 46 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131102100439) 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, 299681 + ... + 593306.
It is an arithmetic number, because the mean of its divisors is an integer number (17252528160).
Almost surely, 2131102100431 is an apocalyptic number.
131102100431 is a deficient number, since it is larger than the sum of its proper divisors (6918124849).
131102100431 is an equidigital number, since it uses as much as digits as its factorization.
131102100431 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 900733.
The product of its (nonzero) digits is 72, while the sum is 17.
Adding to 131102100431 its reverse (134001201131), we get a palindrome (265103301562).
The spelling of 131102100431 in words is "one hundred thirty-one billion, one hundred two million, one hundred thousand, four hundred thirty-one".
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