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13102903 = 1117411709
BaseRepresentation
bin110001111110…
…111100110111
3220122200210201
4301332330313
511323243103
61144501331
7216241612
oct61767467
926580721
1013102903
11743a450
12447a847
132939cc8
141a51179
15123c51d
hexc7ef37

13102903 has 16 divisors (see below), whose sum is σ = 15513120. Its totient is φ = 10931200.

The previous prime is 13102891. The next prime is 13102907. The reversal of 13102903 is 30920131.

It is a cyclic number.

It is not a de Polignac number, because 13102903 - 25 = 13102871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13102907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6813 + ... + 8521.

It is an arithmetic number, because the mean of its divisors is an integer number (969570).

Almost surely, 213102903 is an apocalyptic number.

13102903 is a deficient number, since it is larger than the sum of its proper divisors (2410217).

13102903 is a wasteful number, since it uses less digits than its factorization.

13102903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 13102903 is about 3619.7932261388. The cubic root of 13102903 is about 235.7522476617.

The spelling of 13102903 in words is "thirteen million, one hundred two thousand, nine hundred three".

Divisors: 1 11 17 41 187 451 697 1709 7667 18799 29053 70069 319583 770759 1191173 13102903