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13297317 = 311402949
BaseRepresentation
bin110010101110…
…011010100101
3221000120111020
4302232122211
511401003232
61153001353
7221011455
oct62563245
927016436
1013297317
117562520
124553259
1329a7647
141aa1d65
151279e2c
hexcae6a5

13297317 has 8 divisors (see below), whose sum is σ = 19341600. Its totient is φ = 8058960.

The previous prime is 13297307. The next prime is 13297331. The reversal of 13297317 is 71379231.

It is a happy number.

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

It is not a de Polignac number, because 13297317 - 24 = 13297301 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 402949 = 13297317 / (1 + 3 + 2 + 9 + 7 + 3 + 1 + 7).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13297307) 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 7 ways as a sum of consecutive naturals, for example, 201442 + ... + 201507.

It is an arithmetic number, because the mean of its divisors is an integer number (2417700).

Almost surely, 213297317 is an apocalyptic number.

It is an amenable number.

13297317 is a deficient number, since it is larger than the sum of its proper divisors (6044283).

13297317 is a wasteful number, since it uses less digits than its factorization.

13297317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402963.

The product of its digits is 7938, while the sum is 33.

The square root of 13297317 is about 3646.5486422095. The cubic root of 13297317 is about 236.9125173389.

It can be divided in two parts, 1329 and 7317, that added together give a triangular number (8646 = T131).

The spelling of 13297317 in words is "thirteen million, two hundred ninety-seven thousand, three hundred seventeen".

Divisors: 1 3 11 33 402949 1208847 4432439 13297317