1320204430123 has 4 divisors (see below), whose sum is σ = 1322154511200. Its totient is φ = 1318254349048.

The previous prime is 1320204430109. The next prime is 1320204430177. The reversal of 1320204430123 is 3210344020231.

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

It is a cyclic number.

It is not a de Polignac number, because 1320204430123 - 2⁹ = 1320204429611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320204430183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 975039523 + ... + 975040876.

It is an arithmetic number, because the mean of its divisors is an integer number (330538627800).

Almost surely, 2^{1320204430123} is an apocalyptic number.

1320204430123 is a deficient number, since it is larger than the sum of its proper divisors (1950081077).

1320204430123 is an equidigital number, since it uses as much as digits as its factorization.

1320204430123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1950081076.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 1320204430123 its reverse (3210344020231), we get a palindrome (4530548450354).

The spelling of 1320204430123 in words is "one trillion, three hundred twenty billion, two hundred four million, four hundred thirty thousand, one hundred twenty-three".