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11312233 = 29390077
BaseRepresentation
bin101011001001…
…110001101001
3210021201110121
4223021301221
510343442413
61042243241
7165103162
oct53116151
923251417
1011312233
116427059
123956521
132460c3a
141706769
15ed6b8d
hexac9c69

11312233 has 4 divisors (see below), whose sum is σ = 11702340. Its totient is φ = 10922128.

The previous prime is 11312221. The next prime is 11312261. The reversal of 11312233 is 33221311.

11312233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33221311 = 103322537.

It can be written as a sum of positive squares in 2 ways, for example, as 2832489 + 8479744 = 1683^2 + 2912^2 .

It is a cyclic number.

It is not a de Polignac number, because 11312233 - 221 = 9215081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11312033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195010 + ... + 195067.

It is an arithmetic number, because the mean of its divisors is an integer number (2925585).

Almost surely, 211312233 is an apocalyptic number.

It is an amenable number.

11312233 is a deficient number, since it is larger than the sum of its proper divisors (390107).

11312233 is an equidigital number, since it uses as much as digits as its factorization.

11312233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390106.

The product of its digits is 108, while the sum is 16.

The square root of 11312233 is about 3363.3663196268. The cubic root of 11312233 is about 224.4826500349.

Adding to 11312233 its reverse (33221311), we get a palindrome (44533544).

It can be divided in two parts, 1131 and 2233, that added together give a square (3364 = 582).

The spelling of 11312233 in words is "eleven million, three hundred twelve thousand, two hundred thirty-three".

Divisors: 1 29 390077 11312233