Base | Representation |
---|---|
bin | 100101011111010001… |
… | …0001101010111101111 |
3 | 21200210121100002010201 |
4 | 1022332202031113233 |
5 | 2304334022100111 |
6 | 100552312014331 |
7 | 5550005064061 |
oct | 1127642152757 |
9 | 250717302121 |
10 | 80506050031 |
11 | 31162625a50 |
12 | 137293913a7 |
13 | 778cc278c4 |
14 | 3c7a067731 |
15 | 2162b2e6c1 |
hex | 12be88d5ef |
80506050031 has 4 divisors (see below), whose sum is σ = 87824781864. Its totient is φ = 73187318200.
The previous prime is 80506050011. The next prime is 80506050139. The reversal of 80506050031 is 13005060508.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 80506050031 - 211 = 80506047983 is a prime.
It is a super-3 number, since 3×805060500313 (a number of 34 digits) contains 333 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 (80506050011) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3659365900 + ... + 3659365921.
It is an arithmetic number, because the mean of its divisors is an integer number (21956195466).
Almost surely, 280506050031 is an apocalyptic number.
80506050031 is a deficient number, since it is larger than the sum of its proper divisors (7318731833).
80506050031 is a wasteful number, since it uses less digits than its factorization.
80506050031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 7318731832.
The product of its (nonzero) digits is 3600, while the sum is 28.
The spelling of 80506050031 in words is "eighty billion, five hundred six million, fifty thousand, thirty-one".
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