Base | Representation |
---|---|
bin | 101101110110… |
… | …100100111111 |
3 | 211121200101100 |
4 | 231312210333 |
5 | 11034120111 |
6 | 1105344143 |
7 | 204111552 |
oct | 55664477 |
9 | 24550340 |
10 | 12020031 |
11 | 686a911 |
12 | 4038053 |
13 | 264b15a |
14 | 184c699 |
15 | 10c6756 |
hex | b7693f |
12020031 has 12 divisors (see below), whose sum is σ = 17392752. Its totient is φ = 7999296.
The previous prime is 12019993. The next prime is 12020051. The reversal of 12020031 is 13002021.
It is a happy number.
It is not a de Polignac number, because 12020031 - 214 = 12003647 is a prime.
It is a super-2 number, since 2×120200312 = 288962290481922, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (9).
It is a zygodrome in base 8.
It is a junction number, because it is equal to n+sod(n) for n = 12019995 and 12020022.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12020051) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8110 + ... + 9476.
It is an arithmetic number, because the mean of its divisors is an integer number (1449396).
Almost surely, 212020031 is an apocalyptic number.
12020031 is a deficient number, since it is larger than the sum of its proper divisors (5372721).
12020031 is a wasteful number, since it uses less digits than its factorization.
12020031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2350 (or 2347 counting only the distinct ones).
The product of its (nonzero) digits is 12, while the sum is 9.
The square root of 12020031 is about 3466.9916354096. The cubic root of 12020031 is about 229.0701653124.
Adding to 12020031 its reverse (13002021), we get a palindrome (25022052).
The spelling of 12020031 in words is "twelve million, twenty thousand, thirty-one".
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