3121112423 has 16 divisors (see below), whose sum is σ = 3670531200. Its totient is φ = 2616422880.

The previous prime is 3121112411. The next prime is 3121112441. The reversal of 3121112423 is 3242111213.

It is a cyclic number.

It is not a de Polignac number, because 3121112423 - 2¹⁸ = 3120850279 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3121112395 and 3121112404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121112483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135008 + ... + 156426.

It is an arithmetic number, because the mean of its divisors is an integer number (229408200).

Almost surely, 2^3121112423 is an apocalyptic number.

3121112423 is a deficient number, since it is larger than the sum of its proper divisors (549418777).

3121112423 is a wasteful number, since it uses less digits than its factorization.

3121112423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22462.

The product of its digits is 288, while the sum is 20.

The square root of 3121112423 is about 55866.9170708390. The cubic root of 3121112423 is about 1461.4023591801.

Adding to 3121112423 its reverse (3242111213), we get a palindrome (6363223636).

It can be divided in two parts, 31211 and 12423, that added together give a palindrome (43634).

The spelling of 3121112423 in words is "three billion, one hundred twenty-one million, one hundred twelve thousand, four hundred twenty-three".