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7155106131 = 34382167559
BaseRepresentation
bin1101010100111101…
…00100000101010011
3200110122121001101210
412222132210011103
5104123201344011
63141554431203
7342211253505
oct65236440523
920418531353
107155106131
113041964158
121478292503
138a04a2014
144bc3b3d75
152bd2566a6
hex1aa7a4153

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".

Divisors: 1 3 43 129 821 2463 35303 67559 105909 202677 2905037 8715111 55465939 166397817 2385035377 7155106131