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12311413 = 44327791
BaseRepresentation
bin101110111101…
…101101110101
3212011111002021
4232331231311
511122431123
61115513141
7206434222
oct56755565
925144067
1012311413
116a49824
1241587b1
13272097a
1418c6949
151132c5d
hexbbdb75

12311413 has 4 divisors (see below), whose sum is σ = 12339648. Its totient is φ = 12283180.

The previous prime is 12311401. The next prime is 12311419. The reversal of 12311413 is 31411321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12311413 - 217 = 12180341 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 (12311419) 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 3 ways as a sum of consecutive naturals, for example, 13453 + ... + 14338.

It is an arithmetic number, because the mean of its divisors is an integer number (3084912).

Almost surely, 212311413 is an apocalyptic number.

It is an amenable number.

12311413 is a deficient number, since it is larger than the sum of its proper divisors (28235).

12311413 is an equidigital number, since it uses as much as digits as its factorization.

12311413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28234.

The product of its digits is 72, while the sum is 16.

The square root of 12311413 is about 3508.7623173991. The cubic root of 12311413 is about 230.9063981137.

Adding to 12311413 its reverse (31411321), we get a palindrome (43722734).

The spelling of 12311413 in words is "twelve million, three hundred eleven thousand, four hundred thirteen".

Divisors: 1 443 27791 12311413