Base | Representation |
---|---|
bin | 11100111100100010… |
… | …111011000011000010 |
3 | 2222020001112222100220 |
4 | 130330202323003002 |
5 | 1002123110340121 |
6 | 22140032123510 |
7 | 2150130251004 |
oct | 347442730302 |
9 | 88201488326 |
10 | 31080558786 |
11 | 121aa18a922 |
12 | 6034996596 |
13 | 2c141c9ab4 |
14 | 170bb66374 |
15 | c1d91e6c6 |
hex | 73c8bb0c2 |
31080558786 has 8 divisors (see below), whose sum is σ = 62161117584. Its totient is φ = 10360186260.
The previous prime is 31080558731. The next prime is 31080558787. The reversal of 31080558786 is 68785508013.
It is a sphenic number, since it is the product of 3 distinct primes.
31080558786 is an admirable number.
It is a super-2 number, since 2×310805587862 (a number of 22 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (31080558787) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2590046560 + ... + 2590046571.
It is an arithmetic number, because the mean of its divisors is an integer number (7770139698).
Almost surely, 231080558786 is an apocalyptic number.
31080558786 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
31080558786 is a wasteful number, since it uses less digits than its factorization.
31080558786 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5180093136.
The product of its (nonzero) digits is 1612800, while the sum is 51.
The spelling of 31080558786 in words is "thirty-one billion, eighty million, five hundred fifty-eight thousand, seven hundred eighty-six".
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