1220319 has 8 divisors (see below), whose sum is σ = 1807920. Its totient is φ = 813528.

The previous prime is 1220309. The next prime is 1220327. The reversal of 1220319 is 9130221.

It is a happy number.

It is not a de Polignac number, because 1220319 - 2⁹ = 1219807 is a prime.

It is a super-2 number, since 2×1220319² = 2978356923522, which contains 22 as substring.

1220319 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22572 + ... + 22625.

It is an arithmetic number, because the mean of its divisors is an integer number (225990).

2^1220319 is an apocalyptic number.

1220319 is a deficient number, since it is larger than the sum of its proper divisors (587601).

1220319 is an equidigital number, since it uses as much as digits as its factorization.

1220319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45206 (or 45200 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1220319 is about 1104.6804967953. The cubic root of 1220319 is about 106.8622853449.

The spelling of 1220319 in words is "one million, two hundred twenty thousand, three hundred nineteen".