1219313 has 2 divisors, whose sum is σ = 1219314. Its totient is φ = 1219312.

The previous prime is 1219307. The next prime is 1219343. The reversal of 1219313 is 3139121.

1219313 is nontrivially palindromic in base 9.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1216609 + 2704 = 1103^2 + 52^2 .

It is a cyclic number.

It is not a de Polignac number, because 1219313 - 2⁴ = 1219297 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1219303) 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, 609656 + 609657.

It is an arithmetic number, because the mean of its divisors is an integer number (609657).

2^1219313 is an apocalyptic number.

It is an amenable number.

1219313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1219313 is an equidigital number, since it uses as much as digits as its factorization.

1219313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162, while the sum is 20.

The square root of 1219313 is about 1104.2250676379. The cubic root of 1219313 is about 106.8329124204.

The spelling of 1219313 in words is "one million, two hundred nineteen thousand, three hundred thirteen".