123303204313 has 4 divisors (see below), whose sum is σ = 123984437668. Its totient is φ = 122621970960.

The previous prime is 123303204239. The next prime is 123303204317. The reversal of 123303204313 is 313402303321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313402303321 = 85837 ⋅3651133.

It can be written as a sum of positive squares in 2 ways, for example, as 21789597769 + 101513606544 = 147613^2 + 318612^2 .

It is a cyclic number.

It is not a de Polignac number, because 123303204313 - 2²⁹ = 122766333401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123303204317) 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, 340616406 + ... + 340616767.

It is an arithmetic number, because the mean of its divisors is an integer number (30996109417).

Almost surely, 2^123303204313 is an apocalyptic number.

It is an amenable number.

123303204313 is a deficient number, since it is larger than the sum of its proper divisors (681233355).

123303204313 is an equidigital number, since it uses as much as digits as its factorization.

123303204313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681233354.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 123303204313 its reverse (313402303321), we get a palindrome (436705507634).

The spelling of 123303204313 in words is "one hundred twenty-three billion, three hundred three million, two hundred four thousand, three hundred thirteen".