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BaseRepresentation
bin101000011001101011101
32111021000012
411003031131
5314330434
644213005
714152451
oct5031535
92437005
101323869
11824708
1253a165
13374771
14266661
151b23ce
hex14335d

1323869 has 2 divisors, whose sum is σ = 1323870. Its totient is φ = 1323868.

The previous prime is 1323851. The next prime is 1323871. The reversal of 1323869 is 9683231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1322500 + 1369 = 1150^2 + 37^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1323869 is a prime.

It is a super-2 number, since 2×13238692 = 3505258258322, which contains 22 as substring.

Together with 1323871, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1323899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661934 + 661935.

It is an arithmetic number, because the mean of its divisors is an integer number (661935).

21323869 is an apocalyptic number.

It is an amenable number.

1323869 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323869 is an equidigital number, since it uses as much as digits as its factorization.

1323869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 32.

The square root of 1323869 is about 1150.5950634346. The cubic root of 1323869 is about 109.8032018425.

The spelling of 1323869 in words is "one million, three hundred twenty-three thousand, eight hundred sixty-nine".