Base | Representation |
---|---|
bin | 11100001110111010101011 |
3 | 111221000102222 |
4 | 130032322223 |
5 | 3343314011 |
6 | 422344255 |
7 | 116623433 |
oct | 34167253 |
9 | 14830388 |
10 | 7401131 |
11 | 41a5641 |
12 | 258b08b |
13 | 16c198a |
14 | da92c3 |
15 | 9b2ddb |
hex | 70eeab |
7401131 has 2 divisors, whose sum is σ = 7401132. Its totient is φ = 7401130.
The previous prime is 7401109. The next prime is 7401133. The reversal of 7401131 is 1311047.
It is a strong prime.
It is an emirp because it is prime and its reverse (1311047) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 7401131 - 214 = 7384747 is a prime.
It is a super-2 number, since 2×74011312 = 109553480158322, which contains 22 as substring.
Together with 7401133, it forms a pair of twin primes.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (7401133) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3700565 + 3700566.
It is an arithmetic number, because the mean of its divisors is an integer number (3700566).
Almost surely, 27401131 is an apocalyptic number.
7401131 is a deficient number, since it is larger than the sum of its proper divisors (1).
7401131 is an equidigital number, since it uses as much as digits as its factorization.
7401131 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 84, while the sum is 17.
The square root of 7401131 is about 2720.5019757390. The cubic root of 7401131 is about 194.8794433436.
Subtracting from 7401131 its product of nonzero digits (84), we obtain a palindrome (7401047).
Adding to 7401131 its reverse (1311047), we get a palindrome (8712178).
The spelling of 7401131 in words is "seven million, four hundred one thousand, one hundred thirty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.067 sec. • engine limits •