1228319 has 4 divisors (see below), whose sum is σ = 1258320. Its totient is φ = 1198320.

The previous prime is 1228309. The next prime is 1228327. The reversal of 1228319 is 9138221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9138221 = 19 ⋅480959.

It is a cyclic number.

It is not a de Polignac number, because 1228319 - 2⁴ = 1228303 is a prime.

It is a super-2 number, since 2×1228319² = 3017535131522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228309) 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 in 3 ways as a sum of consecutive naturals, for example, 14939 + ... + 15020.

It is an arithmetic number, because the mean of its divisors is an integer number (314580).

2^1228319 is an apocalyptic number.

1228319 is a deficient number, since it is larger than the sum of its proper divisors (30001).

1228319 is an equidigital number, since it uses as much as digits as its factorization.

1228319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30000.

The product of its digits is 864, while the sum is 26.

The square root of 1228319 is about 1108.2955382027. The cubic root of 1228319 is about 107.0952946142.

The spelling of 1228319 in words is "one million, two hundred twenty-eight thousand, three hundred nineteen".