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11331211 = 41276371
BaseRepresentation
bin101011001110…
…011010001011
3210022200111111
4223032122023
510400044321
61042511151
7165212413
oct53163213
923280444
1011331211
11643a341
1239654b7
132469778
14170d643
15edc5e1
hexace68b

11331211 has 4 divisors (see below), whose sum is σ = 11607624. Its totient is φ = 11054800.

The previous prime is 11331209. The next prime is 11331217. The reversal of 11331211 is 11213311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11213311 = 73153607.

It is a cyclic number.

It is not a de Polignac number, because 11331211 - 21 = 11331209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11331191 and 11331200.

It is not an unprimeable number, because it can be changed into a prime (11331217) 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, 138145 + ... + 138226.

It is an arithmetic number, because the mean of its divisors is an integer number (2901906).

Almost surely, 211331211 is an apocalyptic number.

11331211 is a deficient number, since it is larger than the sum of its proper divisors (276413).

11331211 is an equidigital number, since it uses as much as digits as its factorization.

11331211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276412.

The product of its digits is 18, while the sum is 13.

The square root of 11331211 is about 3366.1864178919. The cubic root of 11331211 is about 224.6081145521.

Adding to 11331211 its reverse (11213311), we get a palindrome (22544522).

The spelling of 11331211 in words is "eleven million, three hundred thirty-one thousand, two hundred eleven".

Divisors: 1 41 276371 11331211