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3108102181 is a prime number
BaseRepresentation
bin1011100101000001…
…1110000000100101
322000121102221122121
42321100132000211
522331133232211
61232225225541
7140010301252
oct27120360045
98017387577
103108102181
111355496198
12728a922b1
133a6c03b22
14216b06429
15132ce9271
hexb941e025

3108102181 has 2 divisors, whose sum is σ = 3108102182. Its totient is φ = 3108102180.

The previous prime is 3108102169. The next prime is 3108102203. The reversal of 3108102181 is 1812018013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2876605956 + 231496225 = 53634^2 + 15215^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-3108102181 is a prime.

It is a super-4 number, since 4×31081021814 (a number of 39 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3108103181) 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 as a sum of consecutive naturals, namely, 1554051090 + 1554051091.

It is an arithmetic number, because the mean of its divisors is an integer number (1554051091).

Almost surely, 23108102181 is an apocalyptic number.

It is an amenable number.

3108102181 is a deficient number, since it is larger than the sum of its proper divisors (1).

3108102181 is an equidigital number, since it uses as much as digits as its factorization.

3108102181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 25.

The square root of 3108102181 is about 55750.3558822722. The cubic root of 3108102181 is about 1459.3689305251.

The spelling of 3108102181 in words is "three billion, one hundred eight million, one hundred two thousand, one hundred eighty-one".