1320430123 has 2 divisors, whose sum is σ = 1320430124. Its totient is φ = 1320430122.

The previous prime is 1320430121. The next prime is 1320430147. The reversal of 1320430123 is 3210340231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1320430123 - 2¹ = 1320430121 is a prime.

Together with 1320430121, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1320430123.

It is not a weakly prime, because it can be changed into another prime (1320430121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660215061 + 660215062.

It is an arithmetic number, because the mean of its divisors is an integer number (660215062).

Almost surely, 2^1320430123 is an apocalyptic number.

1320430123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320430123 is an equidigital number, since it uses as much as digits as its factorization.

1320430123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1320430123 is about 36337.7231400097. The cubic root of 1320430123 is about 1097.0804461053.

Adding to 1320430123 its reverse (3210340231), we get a palindrome (4530770354).

The spelling of 1320430123 in words is "one billion, three hundred twenty million, four hundred thirty thousand, one hundred twenty-three".