3123123203 has 4 divisors (see below), whose sum is σ = 3124364568. Its totient is φ = 3121881840.

The previous prime is 3123123191. The next prime is 3123123247. The reversal of 3123123203 is 3023213213.

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 3123123203 - 2¹⁰ = 3123122179 is a prime.

It is a super-2 number, since 2×3123123203² = 19507797082233958418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3123123293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 616901 + ... + 621942.

It is an arithmetic number, because the mean of its divisors is an integer number (781091142).

Almost surely, 2^3123123203 is an apocalyptic number.

3123123203 is a deficient number, since it is larger than the sum of its proper divisors (1241365).

3123123203 is a wasteful number, since it uses less digits than its factorization.

3123123203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241364.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 3123123203 is about 55884.9103336491. The cubic root of 3123123203 is about 1461.7161284827.

Adding to 3123123203 its reverse (3023213213), we get a palindrome (6146336416).

The spelling of 3123123203 in words is "three billion, one hundred twenty-three million, one hundred twenty-three thousand, two hundred three".