123123312203 has 4 divisors (see below), whose sum is σ = 123294555360. Its totient is φ = 122952069048.

The previous prime is 123123312197. The next prime is 123123312217. The reversal of 123123312203 is 302213321321.

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 123123312203 - 2²⁸ = 122854876747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123123312223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85620500 + ... + 85621937.

It is an arithmetic number, because the mean of its divisors is an integer number (30823638840).

Almost surely, 2^123123312203 is an apocalyptic number.

123123312203 is a deficient number, since it is larger than the sum of its proper divisors (171243157).

123123312203 is an equidigital number, since it uses as much as digits as its factorization.

123123312203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171243156.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 123123312203 its reverse (302213321321), we get a palindrome (425336633524).

The spelling of 123123312203 in words is "one hundred twenty-three billion, one hundred twenty-three million, three hundred twelve thousand, two hundred three".