Base | Representation |
---|---|
bin | 11100001001010000… |
… | …001111000100001111 |
3 | 2220000002022011212020 |
4 | 130021100033010033 |
5 | 443342311201111 |
6 | 21514411541223 |
7 | 2116610643333 |
oct | 341120170417 |
9 | 86002264766 |
10 | 30220022031 |
11 | 118a8461921 |
12 | 5a3475a813 |
13 | 2b07b3c854 |
14 | 166975d7c3 |
15 | bbd0da906 |
hex | 70940f10f |
30220022031 has 4 divisors (see below), whose sum is σ = 40293362712. Its totient is φ = 20146681352.
The previous prime is 30220022011. The next prime is 30220022047. The reversal of 30220022031 is 13022002203.
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 30220022031 - 215 = 30219989263 is a prime.
It is a super-2 number, since 2×302200220312 (a number of 22 digits) contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 30220022031.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30220022011) 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, 5036670336 + ... + 5036670341.
It is an arithmetic number, because the mean of its divisors is an integer number (10073340678).
Almost surely, 230220022031 is an apocalyptic number.
30220022031 is a deficient number, since it is larger than the sum of its proper divisors (10073340681).
30220022031 is a wasteful number, since it uses less digits than its factorization.
30220022031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 10073340680.
The product of its (nonzero) digits is 144, while the sum is 15.
Adding to 30220022031 its reverse (13022002203), we get a palindrome (43242024234).
The spelling of 30220022031 in words is "thirty billion, two hundred twenty million, twenty-two thousand, thirty-one".
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