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13139301 = 3731132
BaseRepresentation
bin110010000111…
…110101100101
3220201112201210
4302013311211
511330424201
61145342033
7216453000
oct62076545
926645653
1013139301
11746482a
124497919
132950746
141a60537
1512481d6
hexc87d65

13139301 has 24 divisors (see below), whose sum is σ = 20612800. Its totient is φ = 7441728.

The previous prime is 13139299. The next prime is 13139341. The reversal of 13139301 is 10393131.

It is not a de Polignac number, because 13139301 - 21 = 13139299 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13139341) 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 in 23 ways as a sum of consecutive naturals, for example, 116221 + ... + 116333.

Almost surely, 213139301 is an apocalyptic number.

It is an amenable number.

13139301 is a deficient number, since it is larger than the sum of its proper divisors (7473499).

13139301 is an frugal number, since it uses more digits than its factorization.

13139301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 243, while the sum is 21.

The square root of 13139301 is about 3624.8173747101. The cubic root of 13139301 is about 235.9703412408.

Multiplying 13139301 by its sum of digits (21), we get a square (275925321 = 166112).

13139301 divided by its sum of digits (21) gives a square (625681 = 7912).

The spelling of 13139301 in words is "thirteen million, one hundred thirty-nine thousand, three hundred one".

Divisors: 1 3 7 21 49 113 147 339 343 791 1029 2373 5537 12769 16611 38307 38759 89383 116277 268149 625681 1877043 4379767 13139301