123311320603 has 2 divisors, whose sum is σ = 123311320604. Its totient is φ = 123311320602.

The previous prime is 123311320591. The next prime is 123311320607. The reversal of 123311320603 is 306023113321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123311320603 - 2⁹ = 123311320091 is a prime.

It is not a weakly prime, because it can be changed into another prime (123311320607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61655660301 + 61655660302.

It is an arithmetic number, because the mean of its divisors is an integer number (61655660302).

Almost surely, 2^123311320603 is an apocalyptic number.

123311320603 is a deficient number, since it is larger than the sum of its proper divisors (1).

123311320603 is an equidigital number, since it uses as much as digits as its factorization.

123311320603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 123311320603 its reverse (306023113321), we get a palindrome (429334433924).

The spelling of 123311320603 in words is "one hundred twenty-three billion, three hundred eleven million, three hundred twenty thousand, six hundred three".