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12102323 = 16772469
BaseRepresentation
bin101110001010…
…101010110011
3211202212021012
4232022222303
511044233243
61111221135
7204603512
oct56125263
924685235
1012102323
116916722
1240777ab
13267974c
141870679
1510e0d18
hexb8aab3

12102323 has 4 divisors (see below), whose sum is σ = 12174960. Its totient is φ = 12029688.

The previous prime is 12102289. The next prime is 12102329. The reversal of 12102323 is 32320121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32320121 = 191701059.

It is a cyclic number.

It is not a de Polignac number, because 12102323 - 28 = 12102067 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12102298 and 12102307.

It is not an unprimeable number, because it can be changed into a prime (12102329) 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, 36068 + ... + 36401.

It is an arithmetic number, because the mean of its divisors is an integer number (3043740).

Almost surely, 212102323 is an apocalyptic number.

12102323 is a deficient number, since it is larger than the sum of its proper divisors (72637).

12102323 is an equidigital number, since it uses as much as digits as its factorization.

12102323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72636.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 12102323 is about 3478.8393179335. The cubic root of 12102323 is about 229.5917331923.

Adding to 12102323 its reverse (32320121), we get a palindrome (44422444).

The spelling of 12102323 in words is "twelve million, one hundred two thousand, three hundred twenty-three".

Divisors: 1 167 72469 12102323