Base | Representation |
---|---|
bin | 11100011100111111… |
… | …011000111000110011 |
3 | 2220212011101020012221 |
4 | 130130333120320303 |
5 | 1000032043301011 |
6 | 22011321101511 |
7 | 2131041330355 |
oct | 343477307063 |
9 | 86764336187 |
10 | 30551150131 |
11 | 11a58367307 |
12 | 5b07627897 |
13 | 2b5b618c38 |
14 | 169b7170d5 |
15 | bdc1e7971 |
hex | 71cfd8e33 |
30551150131 has 4 divisors (see below), whose sum is σ = 30553665912. Its totient is φ = 30548634352.
The previous prime is 30551150117. The next prime is 30551150153. The reversal of 30551150131 is 13105115503.
It is a happy number.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13105115503 = 90059 ⋅145517.
It is a cyclic number.
It is not a de Polignac number, because 30551150131 - 221 = 30549052979 is a prime.
It is a super-2 number, since 2×305511501312 (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 = 30551150096 and 30551150105.
It is not an unprimeable number, because it can be changed into a prime (30551151131) 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, 1239586 + ... + 1263991.
It is an arithmetic number, because the mean of its divisors is an integer number (7638416478).
Almost surely, 230551150131 is an apocalyptic number.
30551150131 is a deficient number, since it is larger than the sum of its proper divisors (2515781).
30551150131 is a wasteful number, since it uses less digits than its factorization.
30551150131 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2515780.
The product of its (nonzero) digits is 1125, while the sum is 25.
Adding to 30551150131 its reverse (13105115503), we get a palindrome (43656265634).
The spelling of 30551150131 in words is "thirty billion, five hundred fifty-one million, one hundred fifty thousand, one hundred thirty-one".
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