Base | Representation |
---|---|
bin | 11100001001011100… |
… | …011100100110111111 |
3 | 2220000022022211002012 |
4 | 130021130130212333 |
5 | 443344121120411 |
6 | 21515004321435 |
7 | 2116650105305 |
oct | 341134344677 |
9 | 86008284065 |
10 | 30223223231 |
11 | 118aa248a43 |
12 | 5a3584327b |
13 | 2b086c0956 |
14 | 1669d54275 |
15 | bbd51e18b |
hex | 70971c9bf |
30223223231 has 4 divisors (see below), whose sum is σ = 30226654464. Its totient is φ = 30219792000.
The previous prime is 30223223213. The next prime is 30223223249. The reversal of 30223223231 is 13232232203.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13232232203 = 1567 ⋅8444309.
It is an interprime number because it is at equal distance from previous prime (30223223213) and next prime (30223223249).
It is a cyclic number.
It is not a de Polignac number, because 30223223231 - 214 = 30223206847 is a prime.
It is a super-2 number, since 2×302232232312 (a number of 22 digits) contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 30223223197 and 30223223206.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30223223281) 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, 1702370 + ... + 1720031.
It is an arithmetic number, because the mean of its divisors is an integer number (7556663616).
Almost surely, 230223223231 is an apocalyptic number.
30223223231 is a deficient number, since it is larger than the sum of its proper divisors (3431233).
30223223231 is an equidigital number, since it uses as much as digits as its factorization.
30223223231 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3431232.
The product of its (nonzero) digits is 2592, while the sum is 23.
Adding to 30223223231 its reverse (13232232203), we get a palindrome (43455455434).
The spelling of 30223223231 in words is "thirty billion, two hundred twenty-three million, two hundred twenty-three thousand, two hundred thirty-one".
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