1117321 has 2 divisors, whose sum is σ = 1117322. Its totient is φ = 1117320.

The previous prime is 1117309. The next prime is 1117349. The reversal of 1117321 is 1237111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1081600 + 35721 = 1040^2 + 189^2 .

It is a cyclic number.

It is not a de Polignac number, because 1117321 - 2⁹ = 1116809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1117295 and 1117304.

It is not a weakly prime, because it can be changed into another prime (1117301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558660 + 558661.

It is an arithmetic number, because the mean of its divisors is an integer number (558661).

2^1117321 is an apocalyptic number.

It is an amenable number.

1117321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1117321 is an equidigital number, since it uses as much as digits as its factorization.

1117321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42, while the sum is 16.

The square root of 1117321 is about 1057.0340581079. The cubic root of 1117321 is about 103.7670141932.

The spelling of 1117321 in words is "one million, one hundred seventeen thousand, three hundred twenty-one".