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13312351 = 131317817
BaseRepresentation
bin110010110010…
…000101011111
3221001100010001
4302302011133
511401443401
61153155131
7221103343
oct62620537
927040101
1013312351
117572848
12455baa7
1329b1440
141aa7623
15127e601
hexcb215f

13312351 has 8 divisors (see below), whose sum is σ = 14447664. Its totient is φ = 12192960.

The previous prime is 13312349. The next prime is 13312379. The reversal of 13312351 is 15321331.

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

It is not a de Polignac number, because 13312351 - 21 = 13312349 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 (13312391) 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, 2206 + ... + 5611.

It is an arithmetic number, because the mean of its divisors is an integer number (1805958).

Almost surely, 213312351 is an apocalyptic number.

13312351 is a deficient number, since it is larger than the sum of its proper divisors (1135313).

13312351 is a wasteful number, since it uses less digits than its factorization.

13312351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7961.

The product of its digits is 270, while the sum is 19.

The square root of 13312351 is about 3648.6094611509. The cubic root of 13312351 is about 237.0017684593.

Adding to 13312351 its reverse (15321331), we get a palindrome (28633682).

The spelling of 13312351 in words is "thirteen million, three hundred twelve thousand, three hundred fifty-one".

Divisors: 1 13 131 1703 7817 101621 1024027 13312351