3123404433405 has 24 divisors (see below), whose sum is σ = 5463569843160. Its totient is φ = 1650532982400.

The previous prime is 3123404433397. The next prime is 3123404433431. The reversal of 3123404433405 is 5043344043213.

It is a happy number.

3123404433405 is a `hidden beast` number, since 312 + 3 + 4 + 0 + 4 + 4 + 334 + 0 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 760485155364 + 2362919278041 = 872058^2 + 1537179^2 .

It is not a de Polignac number, because 3123404433405 - 2³ = 3123404433397 is a prime.

It is a super-2 number, since 2×3123404433405² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3123404433405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 318384946 + ... + 318394755.

It is an arithmetic number, because the mean of its divisors is an integer number (227648743465).

Almost surely, 2^{3123404433405} is an apocalyptic number.

It is an amenable number.

3123404433405 is a deficient number, since it is larger than the sum of its proper divisors (2340165409755).

3123404433405 is a wasteful number, since it uses less digits than its factorization.

3123404433405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636779821 (or 636779818 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 36.

Adding to 3123404433405 its reverse (5043344043213), we get a palindrome (8166748476618).

The spelling of 3123404433405 in words is "three trillion, one hundred twenty-three billion, four hundred four million, four hundred thirty-three thousand, four hundred five".