Base | Representation |
---|---|
bin | 111001011110… |
… | …0001110011101 |
3 | 2002200211002201 |
4 | 1302330032131 |
5 | 30203143401 |
6 | 2553451501 |
7 | 514052530 |
oct | 162741635 |
9 | 62624081 |
10 | 30131101 |
11 | 1600aa40 |
12 | a110b91 |
13 | 631c870 |
14 | 4004a17 |
15 | 29a2b01 |
hex | 1cbc39d |
30131101 has 32 divisors (see below), whose sum is σ = 41803776. Its totient is φ = 20952000.
The previous prime is 30131071. The next prime is 30131107. The reversal of 30131101 is 10113103.
It is a cyclic number.
It is not a de Polignac number, because 30131101 - 25 = 30131069 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30131107) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30546 + ... + 31516.
It is an arithmetic number, because the mean of its divisors is an integer number (1306368).
Almost surely, 230131101 is an apocalyptic number.
30131101 is a gapful number since it is divisible by the number (31) formed by its first and last digit.
It is an amenable number.
30131101 is a deficient number, since it is larger than the sum of its proper divisors (11672675).
30131101 is a wasteful number, since it uses less digits than its factorization.
30131101 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1033.
The product of its (nonzero) digits is 9, while the sum is 10.
The square root of 30131101 is about 5489.1803577583. The cubic root of 30131101 is about 311.1752165188.
Adding to 30131101 its reverse (10113103), we get a palindrome (40244204).
It can be divided in two parts, 3013 and 1101, that added together give a palindrome (4114).
The spelling of 30131101 in words is "thirty million, one hundred thirty-one thousand, one hundred one".
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