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11311199 = 14477817
BaseRepresentation
bin101011001001…
…100001011111
3210021200001022
4223021201133
510343424244
61042234355
7165100154
oct53114137
923250038
1011311199
1164262a9
1239559bb
132460623
14170622b
15ed66ee
hexac985f

11311199 has 4 divisors (see below), whose sum is σ = 11320464. Its totient is φ = 11301936.

The previous prime is 11311177. The next prime is 11311217. The reversal of 11311199 is 99111311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 99111311 = 137623947.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-11311199 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 (11311109) 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 3 ways as a sum of consecutive naturals, for example, 2462 + ... + 5355.

It is an arithmetic number, because the mean of its divisors is an integer number (2830116).

Almost surely, 211311199 is an apocalyptic number.

11311199 is a deficient number, since it is larger than the sum of its proper divisors (9265).

11311199 is an equidigital number, since it uses as much as digits as its factorization.

11311199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9264.

The product of its digits is 243, while the sum is 26.

The square root of 11311199 is about 3363.2126010706. The cubic root of 11311199 is about 224.4758101790.

The spelling of 11311199 in words is "eleven million, three hundred eleven thousand, one hundred ninety-nine".

Divisors: 1 1447 7817 11311199