1320323023 has 2 divisors, whose sum is σ = 1320323024. Its totient is φ = 1320323022.

The previous prime is 1320322967. The next prime is 1320323141. The reversal of 1320323023 is 3203230231.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320323023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320323723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660161511 + 660161512.

It is an arithmetic number, because the mean of its divisors is an integer number (660161512).

Almost surely, 2^1320323023 is an apocalyptic number.

1320323023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320323023 is an equidigital number, since it uses as much as digits as its factorization.

1320323023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 1320323023 is about 36336.2494349651. The cubic root of 1320323023 is about 1097.0507839292.

Adding to 1320323023 its reverse (3203230231), we get a palindrome (4523553254).

The spelling of 1320323023 in words is "one billion, three hundred twenty million, three hundred twenty-three thousand, twenty-three".