Base | Representation |
---|---|
bin | 11011011100111… |
… | …11111000100111 |
3 | 121001100002122112 |
4 | 31232133320213 |
5 | 432423334111 |
6 | 34503551235 |
7 | 5464313153 |
oct | 1556377047 |
9 | 531302575 |
10 | 230293031 |
11 | 108aa3621 |
12 | 6515b51b |
13 | 38932787 |
14 | 2282a063 |
15 | 1533ee8b |
hex | db9fe27 |
230293031 has 4 divisors (see below), whose sum is σ = 238234200. Its totient is φ = 222351864.
The previous prime is 230293013. The next prime is 230293039. The reversal of 230293031 is 130392032.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 230293031 - 26 = 230292967 is a prime.
It is a super-2 number, since 2×2302930312 = 106069760254333922, 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 = 230292988 and 230293006.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (230293039) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3970541 + ... + 3970598.
It is an arithmetic number, because the mean of its divisors is an integer number (59558550).
Almost surely, 2230293031 is an apocalyptic number.
230293031 is a deficient number, since it is larger than the sum of its proper divisors (7941169).
230293031 is an equidigital number, since it uses as much as digits as its factorization.
230293031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7941168.
The product of its (nonzero) digits is 972, while the sum is 23.
The square root of 230293031 is about 15175.4087589099. The cubic root of 230293031 is about 612.9526569765.
Subtracting from 230293031 its reverse (130392032), we obtain a palindrome (99900999).
The spelling of 230293031 in words is "two hundred thirty million, two hundred ninety-three thousand, thirty-one".
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