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13311321 = 35383719
BaseRepresentation
bin110010110001…
…110101011001
3221001021200220
4302301311121
511401430241
61153150253
7221100342
oct62616531
927037626
1013311321
117571aa1
12455b389
1329b0b2a
141aa70c9
15127e166
hexcb1d59

13311321 has 8 divisors (see below), whose sum is σ = 18083520. Its totient is φ = 8706672.

The previous prime is 13311317. The next prime is 13311349. The reversal of 13311321 is 12311331.

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

It is not a de Polignac number, because 13311321 - 22 = 13311317 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13311321.

It is not an unprimeable number, because it can be changed into a prime (13311301) 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, 41701 + ... + 42018.

It is an arithmetic number, because the mean of its divisors is an integer number (2260440).

Almost surely, 213311321 is an apocalyptic number.

It is an amenable number.

13311321 is a deficient number, since it is larger than the sum of its proper divisors (4772199).

13311321 is an equidigital number, since it uses as much as digits as its factorization.

13311321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83775.

The product of its digits is 54, while the sum is 15.

The square root of 13311321 is about 3648.4683087564. The cubic root of 13311321 is about 236.9956558872.

Adding to 13311321 its reverse (12311331), we get a palindrome (25622652).

The spelling of 13311321 in words is "thirteen million, three hundred eleven thousand, three hundred twenty-one".

Divisors: 1 3 53 159 83719 251157 4437107 13311321