Base | Representation |
---|---|
bin | 10000110110001000… |
… | …011110010001111111 |
3 | 1201200120212122200022 |
4 | 100312020132101333 |
5 | 244021020410111 |
6 | 12150505522355 |
7 | 1210144654616 |
oct | 206610362177 |
9 | 51616778608 |
10 | 18088060031 |
11 | 7742269248 |
12 | 36097a33bb |
13 | 1923553502 |
14 | c383d087d |
15 | 70cea02db |
hex | 43621e47f |
18088060031 has 4 divisors (see below), whose sum is σ = 18163114464. Its totient is φ = 18013005600.
The previous prime is 18088060007. The next prime is 18088060073. The reversal of 18088060031 is 13006088081.
It is a happy number.
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 18088060031 - 26 = 18088059967 is a prime.
It is a super-2 number, since 2×180880600312 (a number of 21 digits) contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 18088059973 and 18088060000.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (18088060831) 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, 37526855 + ... + 37527336.
It is an arithmetic number, because the mean of its divisors is an integer number (4540778616).
Almost surely, 218088060031 is an apocalyptic number.
18088060031 is a deficient number, since it is larger than the sum of its proper divisors (75054433).
18088060031 is an equidigital number, since it uses as much as digits as its factorization.
18088060031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 75054432.
The product of its (nonzero) digits is 9216, while the sum is 35.
The spelling of 18088060031 in words is "eighteen billion, eighty-eight million, sixty thousand, thirty-one".
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