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13315071 = 371157641
BaseRepresentation
bin110010110010…
…101111111111
3221001110211210
4302302233333
511402040241
61153215503
7221114310
oct62625777
927043753
1013315071
1175748a0
124561593
1329b2753
141aa8607
151280316
hexcb2bff

13315071 has 16 divisors (see below), whose sum is σ = 22134528. Its totient is φ = 6916800.

The previous prime is 13315069. The next prime is 13315103. The reversal of 13315071 is 17051331.

It is not a de Polignac number, because 13315071 - 21 = 13315069 is a prime.

It is a super-2 number, since 2×133150712 = 354582231470082, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13315021) 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, 28590 + ... + 29051.

It is an arithmetic number, because the mean of its divisors is an integer number (1383408).

Almost surely, 213315071 is an apocalyptic number.

13315071 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13315071 is a deficient number, since it is larger than the sum of its proper divisors (8819457).

13315071 is a wasteful number, since it uses less digits than its factorization.

13315071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57662.

The product of its (nonzero) digits is 315, while the sum is 21.

The square root of 13315071 is about 3648.9821868570. The cubic root of 13315071 is about 237.0179088819.

The spelling of 13315071 in words is "thirteen million, three hundred fifteen thousand, seventy-one".

Divisors: 1 3 7 11 21 33 77 231 57641 172923 403487 634051 1210461 1902153 4438357 13315071