123203312103 has 4 divisors (see below), whose sum is σ = 164271082808. Its totient is φ = 82135541400.

The previous prime is 123203312077. The next prime is 123203312137. The reversal of 123203312103 is 301213302321.

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

It is not a de Polignac number, because 123203312103 - 2¹⁰ = 123203311079 is a prime.

It is a super-2 number, since 2×123203312103² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123203312103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123203812103) 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, 20533885348 + ... + 20533885353.

It is an arithmetic number, because the mean of its divisors is an integer number (41067770702).

Almost surely, 2^123203312103 is an apocalyptic number.

123203312103 is a deficient number, since it is larger than the sum of its proper divisors (41067770705).

123203312103 is an equidigital number, since it uses as much as digits as its factorization.

123203312103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41067770704.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 123203312103 its reverse (301213302321), we get a palindrome (424416614424).

The spelling of 123203312103 in words is "one hundred twenty-three billion, two hundred three million, three hundred twelve thousand, one hundred three".