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103120415 = 531665293
BaseRepresentation
bin1100010010101…
…11111000011111
321012001001121122
412021113320133
5202344323130
614122121155
72361336416
oct611277037
9235031548
10103120415
1153232992
122a6501bb
1318496bc8
14d9a447d
1590be2e5
hex6257e1f

103120415 has 8 divisors (see below), whose sum is σ = 127736448. Its totient is φ = 79835040.

The previous prime is 103120411. The next prime is 103120463. The reversal of 103120415 is 514021301.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 103120415 - 22 = 103120411 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103120393 and 103120402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103120411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332492 + ... + 332801.

It is an arithmetic number, because the mean of its divisors is an integer number (15967056).

Almost surely, 2103120415 is an apocalyptic number.

103120415 is a deficient number, since it is larger than the sum of its proper divisors (24616033).

103120415 is an equidigital number, since it uses as much as digits as its factorization.

103120415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665329.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 103120415 is about 10154.8222534912. The cubic root of 103120415 is about 468.9374138885.

Adding to 103120415 its reverse (514021301), we get a palindrome (617141716).

The spelling of 103120415 in words is "one hundred three million, one hundred twenty thousand, four hundred fifteen".

Divisors: 1 5 31 155 665293 3326465 20624083 103120415