Search a number
-
+
30300231 = 31319103397
BaseRepresentation
bin111001110010…
…1100001000111
32010000102002210
41303211201013
530224101411
63001234503
7515355603
oct163454107
963012083
1030300231
1116116015
12a192a33
13637b840
14404a503
1529d7ca6
hex1ce5847

30300231 has 32 divisors (see below), whose sum is σ = 46359040. Its totient is φ = 17449344.

The previous prime is 30300211. The next prime is 30300241. The reversal of 30300231 is 13200303.

Adding to 30300231 its reverse (13200303), we get a palindrome (43500534).

It is a happy number.

It is not a de Polignac number, because 30300231 - 26 = 30300167 is a prime.

It is a super-2 number, since 2×303002312 = 1836207997306722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30300211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76125 + ... + 76521.

It is an arithmetic number, because the mean of its divisors is an integer number (1448720).

Almost surely, 230300231 is an apocalyptic number.

30300231 is a deficient number, since it is larger than the sum of its proper divisors (16058809).

30300231 is a wasteful number, since it uses less digits than its factorization.

30300231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535.

The product of its (nonzero) digits is 54, while the sum is 12.

The square root of 30300231 is about 5504.5645604353. The cubic root of 30300231 is about 311.7563535851.

The spelling of 30300231 in words is "thirty million, three hundred thousand, two hundred thirty-one".

Divisors: 1 3 13 19 39 57 103 247 309 397 741 1191 1339 1957 4017 5161 5871 7543 15483 22629 25441 40891 76323 98059 122673 294177 531583 776929 1594749 2330787 10100077 30300231