1228013 has 2 divisors, whose sum is σ = 1228014. Its totient is φ = 1228012.

The previous prime is 1228009. The next prime is 1228021. The reversal of 1228013 is 3108221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 917764 + 310249 = 958^2 + 557^2 .

It is an emirp because it is prime and its reverse (3108221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1228013 - 2² = 1228009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1227982 and 1228000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1228613) 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 as a sum of consecutive naturals, namely, 614006 + 614007.

It is an arithmetic number, because the mean of its divisors is an integer number (614007).

2^1228013 is an apocalyptic number.

It is an amenable number.

1228013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228013 is an equidigital number, since it uses as much as digits as its factorization.

1228013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1228013 is about 1108.1574797834. The cubic root of 1228013 is about 107.0864006483.

The spelling of 1228013 in words is "one million, two hundred twenty-eight thousand, thirteen".