3121113423 has 4 divisors (see below), whose sum is σ = 4161484568. Its totient is φ = 2080742280.

The previous prime is 3121113421. The next prime is 3121113427. The reversal of 3121113423 is 3243111213.

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

It is not a de Polignac number, because 3121113423 - 2¹ = 3121113421 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 3121113423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121113421) 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, 520185568 + ... + 520185573.

It is an arithmetic number, because the mean of its divisors is an integer number (1040371142).

Almost surely, 2^3121113423 is an apocalyptic number.

3121113423 is a deficient number, since it is larger than the sum of its proper divisors (1040371145).

3121113423 is a wasteful number, since it uses less digits than its factorization.

3121113423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040371144.

The product of its digits is 432, while the sum is 21.

The square root of 3121113423 is about 55866.9260206788. The cubic root of 3121113423 is about 1461.4025152571.

Adding to 3121113423 its reverse (3243111213), we get a palindrome (6364224636).

The spelling of 3121113423 in words is "three billion, one hundred twenty-one million, one hundred thirteen thousand, four hundred twenty-three".