Base | Representation |
---|---|
bin | 101111010011… |
… | …101010100011 |
3 | 212100001101222 |
4 | 233103222203 |
5 | 11133320230 |
6 | 1121445255 |
7 | 210260303 |
oct | 57235243 |
9 | 25301358 |
10 | 12401315 |
11 | 7000323 |
12 | 41a082b |
13 | 2752874 |
14 | 190b603 |
15 | 114e6e5 |
hex | bd3aa3 |
12401315 has 4 divisors (see below), whose sum is σ = 14881584. Its totient is φ = 9921048.
The previous prime is 12401309. The next prime is 12401317. The reversal of 12401315 is 51310421.
12401315 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51310421 = 79 ⋅649499.
It is a cyclic number.
It is not a de Polignac number, because 12401315 - 26 = 12401251 is a prime.
It is a super-2 number, since 2×124013152 = 307585227458450, 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 = 12401293 and 12401302.
It is not an unprimeable number, because it can be changed into a prime (12401317) 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, 1240127 + ... + 1240136.
It is an arithmetic number, because the mean of its divisors is an integer number (3720396).
Almost surely, 212401315 is an apocalyptic number.
12401315 is a deficient number, since it is larger than the sum of its proper divisors (2480269).
12401315 is an equidigital number, since it uses as much as digits as its factorization.
12401315 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2480268.
The product of its (nonzero) digits is 120, while the sum is 17.
The square root of 12401315 is about 3521.5500848348. The cubic root of 12401315 is about 231.4670871112.
Adding to 12401315 its reverse (51310421), we get a palindrome (63711736).
The spelling of 12401315 in words is "twelve million, four hundred one thousand, three hundred fifteen".
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