1320200023 has 4 divisors (see below), whose sum is σ = 1377600048. Its totient is φ = 1262800000.

The previous prime is 1320199999. The next prime is 1320200033. The reversal of 1320200023 is 3200020231.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320200023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1320199976 and 1320200012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320200033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28699978 + ... + 28700023.

It is an arithmetic number, because the mean of its divisors is an integer number (344400012).

Almost surely, 2^1320200023 is an apocalyptic number.

1320200023 is a deficient number, since it is larger than the sum of its proper divisors (57400025).

1320200023 is an equidigital number, since it uses as much as digits as its factorization.

1320200023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57400024.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 1320200023 is about 36334.5568708358. The cubic root of 1320200023 is about 1097.0167161457.

Adding to 1320200023 its reverse (3200020231), we get a palindrome (4520220254).

The spelling of 1320200023 in words is "one billion, three hundred twenty million, two hundred thousand, twenty-three".