3123112123 has 4 divisors (see below), whose sum is σ = 3123243688. Its totient is φ = 3122980560.

The previous prime is 3123112067. The next prime is 3123112141. The reversal of 3123112123 is 3212113213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3212113213 = 3677 ⋅873569.

It is a cyclic number.

It is not a de Polignac number, because 3123112123 - 2²⁹ = 2586241211 is a prime.

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 3123112123.

It is not an unprimeable number, because it can be changed into a prime (3123112423) 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, 19161 + ... + 81322.

It is an arithmetic number, because the mean of its divisors is an integer number (780810922).

Almost surely, 2^3123112123 is an apocalyptic number.

3123112123 is a deficient number, since it is larger than the sum of its proper divisors (131565).

3123112123 is a wasteful number, since it uses less digits than its factorization.

3123112123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131564.

The product of its digits is 216, while the sum is 19.

The square root of 3123112123 is about 55884.8112012557. The cubic root of 3123112123 is about 1461.7143998889.

Adding to 3123112123 its reverse (3212113213), we get a palindrome (6335225336).

The spelling of 3123112123 in words is "three billion, one hundred twenty-three million, one hundred twelve thousand, one hundred twenty-three".