3123203123 has 2 divisors, whose sum is σ = 3123203124. Its totient is φ = 3123203122.

The previous prime is 3123203119. The next prime is 3123203137. The reversal of 3123203123 is 3213023213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3123203123 - 2² = 3123203119 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 3123203095 and 3123203104.

It is not a weakly prime, because it can be changed into another prime (3123203113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1561601561 + 1561601562.

It is an arithmetic number, because the mean of its divisors is an integer number (1561601562).

Almost surely, 2^3123203123 is an apocalyptic number.

3123203123 is a deficient number, since it is larger than the sum of its proper divisors (1).

3123203123 is an equidigital number, since it uses as much as digits as its factorization.

3123203123 is an evil number, because the sum of its binary digits is even.

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

The square root of 3123203123 is about 55885.6253700359. The cubic root of 3123203123 is about 1461.7285967022.

Adding to 3123203123 its reverse (3213023213), we get a palindrome (6336226336).

The spelling of 3123203123 in words is "three billion, one hundred twenty-three million, two hundred three thousand, one hundred twenty-three".