Base | Representation |
---|---|
bin | 1101010100111101… |
… | …00100000101010011 |
3 | 200110122121001101210 |
4 | 12222132210011103 |
5 | 104123201344011 |
6 | 3141554431203 |
7 | 342211253505 |
oct | 65236440523 |
9 | 20418531353 |
10 | 7155106131 |
11 | 3041964158 |
12 | 1478292503 |
13 | 8a04a2014 |
14 | 4bc3b3d75 |
15 | 2bd2566a6 |
hex | 1aa7a4153 |
7155106131 has 16 divisors (see below), whose sum is σ = 9774040320. Its totient is φ = 4653395040.
The previous prime is 7155106129. The next prime is 7155106141. The reversal of 7155106131 is 1316015517.
It is not a de Polignac number, because 7155106131 - 21 = 7155106129 is a prime.
It is a super-2 number, since 2×71551061312 (a number of 21 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (7155106111) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72130 + ... + 139688.
It is an arithmetic number, because the mean of its divisors is an integer number (610877520).
Almost surely, 27155106131 is an apocalyptic number.
7155106131 is a deficient number, since it is larger than the sum of its proper divisors (2618934189).
7155106131 is a wasteful number, since it uses less digits than its factorization.
7155106131 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 68426.
The product of its (nonzero) digits is 3150, while the sum is 30.
The square root of 7155106131 is about 84587.8604233492. The cubic root of 7155106131 is about 1926.9570140717.
The spelling of 7155106131 in words is "seven billion, one hundred fifty-five million, one hundred six thousand, one hundred thirty-one".
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