Base | Representation |
---|---|
bin | 110010011110… |
… | …010000010101 |
3 | 220220012200200 |
4 | 302132100111 |
5 | 11341344000 |
6 | 1151331113 |
7 | 220314465 |
oct | 62362025 |
9 | 26805620 |
10 | 13231125 |
11 | 7517816 |
12 | 4520a99 |
13 | 298348b |
14 | 1a85ba5 |
15 | 1265500 |
hex | c9e415 |
13231125 has 48 divisors (see below), whose sum is σ = 25147200. Its totient is φ = 6674400.
The previous prime is 13231123. The next prime is 13231147. The reversal of 13231125 is 52113231.
It is not a de Polignac number, because 13231125 - 21 = 13231123 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 13231098 and 13231107.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13231123) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21066 + ... + 21684.
It is an arithmetic number, because the mean of its divisors is an integer number (523900).
Almost surely, 213231125 is an apocalyptic number.
13231125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
13231125 is a deficient number, since it is larger than the sum of its proper divisors (11916075).
13231125 is a wasteful number, since it uses less digits than its factorization.
13231125 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 659 (or 646 counting only the distinct ones).
The product of its digits is 180, while the sum is 18.
The square root of 13231125 is about 3637.4613400007. The cubic root of 13231125 is about 236.5187585596.
Adding to 13231125 its reverse (52113231), we get a palindrome (65344356).
The spelling of 13231125 in words is "thirteen million, two hundred thirty-one thousand, one hundred twenty-five".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.066 sec. • engine limits •