Base | Representation |
---|---|
bin | 1111111110110… |
… | …0110001110011 |
3 | 11200010111001110 |
4 | 3333230301303 |
5 | 114124431011 |
6 | 10352404403 |
7 | 1442514060 |
oct | 377546163 |
9 | 150114043 |
10 | 67030131 |
11 | 34922803 |
12 | 1a546703 |
13 | 10b6bacc |
14 | 8c8bc67 |
15 | 5d40ba6 |
hex | 3fecc73 |
67030131 has 32 divisors (see below), whose sum is σ = 105412608. Its totient is φ = 37094400.
The previous prime is 67030087. The next prime is 67030151. The reversal of 67030131 is 13103076.
It is not a de Polignac number, because 67030131 - 211 = 67028083 is a prime.
It is a super-2 number, since 2×670301312 = 8986076923754322, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (21).
It is a junction number, because it is equal to n+sod(n) for n = 67030098 and 67030107.
It is not an unprimeable number, because it can be changed into a prime (67030151) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 111231 + ... + 111831.
It is an arithmetic number, because the mean of its divisors is an integer number (3294144).
Almost surely, 267030131 is an apocalyptic number.
67030131 is a deficient number, since it is larger than the sum of its proper divisors (38382477).
67030131 is a wasteful number, since it uses less digits than its factorization.
67030131 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 771.
The product of its (nonzero) digits is 378, while the sum is 21.
The square root of 67030131 is about 8187.1931087522. The cubic root of 67030131 is about 406.2156857486.
It can be divided in two parts, 67030 and 131, that added together give a triangular number (67161 = T366).
The spelling of 67030131 in words is "sixty-seven million, thirty thousand, one hundred thirty-one".
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