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103157105 = 517271389
BaseRepresentation
bin1100010011000…
…00110101110001
321012002220221112
412021200311301
5202402011410
614123003105
72361551402
oct611406561
9235086845
10103157105
1153258507
122a669495
13184aa80c
14d9b39a9
1590ca105
hex6260d71

103157105 has 12 divisors (see below), whose sum is σ = 131500380. Its totient is φ = 77670144.

The previous prime is 103157083. The next prime is 103157111. The reversal of 103157105 is 501751301.

It can be written as a sum of positive squares in 6 ways, for example, as 30958096 + 72199009 = 5564^2 + 8497^2 .

It is not a de Polignac number, because 103157105 - 212 = 103153009 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34250 + ... + 37139.

It is an arithmetic number, because the mean of its divisors is an integer number (10958365).

Almost surely, 2103157105 is an apocalyptic number.

It is an amenable number.

103157105 is a deficient number, since it is larger than the sum of its proper divisors (28343275).

103157105 is an equidigital number, since it uses as much as digits as its factorization.

103157105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71428 (or 71411 counting only the distinct ones).

The product of its (nonzero) digits is 525, while the sum is 23.

The square root of 103157105 is about 10156.6286237117. The cubic root of 103157105 is about 468.9930229018.

The spelling of 103157105 in words is "one hundred three million, one hundred fifty-seven thousand, one hundred five".

Divisors: 1 5 17 85 289 1445 71389 356945 1213613 6068065 20631421 103157105