1320023 has 2 divisors, whose sum is σ = 1320024. Its totient is φ = 1320022.

The previous prime is 1320019. The next prime is 1320031. The reversal of 1320023 is 3200231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1320023 - 2² = 1320019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1319986 and 1320013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660011 + 660012.

It is an arithmetic number, because the mean of its divisors is an integer number (660012).

2^1320023 is an apocalyptic number.

1320023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320023 is an equidigital number, since it uses as much as digits as its factorization.

1320023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 1320023 is about 1148.9225387292. The cubic root of 1320023 is about 109.6967681689.

Adding to 1320023 its reverse (3200231), we get a palindrome (4520254).

The spelling of 1320023 in words is "one million, three hundred twenty thousand, twenty-three".