Base | Representation |
---|---|
bin | 1001100011011… |
… | …10101011101011 |
3 | 12120210210110012 |
4 | 10301232223223 |
5 | 131004121011 |
6 | 11541442135 |
7 | 1662136163 |
oct | 461565353 |
9 | 176723405 |
10 | 80145131 |
11 | 41270250 |
12 | 22a1034b |
13 | 137b1471 |
14 | a9035a3 |
15 | 7081a8b |
hex | 4c6eaeb |
80145131 has 8 divisors (see below), whose sum is σ = 87504624. Its totient is φ = 72797920.
The previous prime is 80145127. The next prime is 80145151. The reversal of 80145131 is 13154108.
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 80145131 - 22 = 80145127 is a prime.
It is a super-2 number, since 2×801451312 = 12846484046014322, which contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 80145097 and 80145106.
It is not an unprimeable number, because it can be changed into a prime (80145101) 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, 15485 + ... + 20001.
It is an arithmetic number, because the mean of its divisors is an integer number (10938078).
Almost surely, 280145131 is an apocalyptic number.
80145131 is a deficient number, since it is larger than the sum of its proper divisors (7359493).
80145131 is a wasteful number, since it uses less digits than its factorization.
80145131 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6141.
The product of its (nonzero) digits is 480, while the sum is 23.
The square root of 80145131 is about 8952.3813033181. The cubic root of 80145131 is about 431.1473433170.
Adding to 80145131 its reverse (13154108), we get a palindrome (93299239).
The spelling of 80145131 in words is "eighty million, one hundred forty-five thousand, one hundred thirty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.071 sec. • engine limits •