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1000213 is a prime number

1000213 has 2 divisors, whose sum is σ = 1000214. Its totient is φ = 1000212.

The previous prime is 1000211. The next prime is 1000231. The reversal of 1000213 is 3120001.

Adding to 1000213 its reverse (3120001), we get a palindrome (4120214).


Together with next prime (1000231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 786769 + 213444 = 887^2 + 462^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000213 - 21 = 1000211 is a prime.

Together with 1000211, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1000196 and 1000205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500106 + 500107.

It is an arithmetic number, because the mean of its divisors is an integer number (500107).

21000213 is an apocalyptic number.

It is an amenable number.


1000213 is an equidigital number, since it uses as much as digits as its factorization.

1000213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 1000213 is about 1000.1064943295. The cubic root of 1000213 is about 100.0070994960.

The spelling of 1000213 in words is "one million, two hundred thirteen", and thus it is an aban number.