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1282231 is a prime number
BaseRepresentation
bin100111001000010110111
32102010220001
410321002313
5312012411
643252131
713620166
oct4710267
92363801
101282231
117a63a5
1251a047
1335b822
142553dd
151a4dc1
hex1390b7

1282231 has 2 divisors, whose sum is σ = 1282232. Its totient is φ = 1282230.

The previous prime is 1282213. The next prime is 1282241. The reversal of 1282231 is 1322821.

Together with previous prime (1282213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1282231 - 211 = 1280183 is a prime.

It is a super-2 number, since 2×12822312 = 3288232674722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1282199 and 1282208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1282201) 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, 641115 + 641116.

It is an arithmetic number, because the mean of its divisors is an integer number (641116).

21282231 is an apocalyptic number.

1282231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1282231 is an equidigital number, since it uses as much as digits as its factorization.

1282231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 19.

The square root of 1282231 is about 1132.3563926609. The cubic root of 1282231 is about 108.6397499837.

The spelling of 1282231 in words is "one million, two hundred eighty-two thousand, two hundred thirty-one".