13123003444 has 24 divisors (see below), whose sum is σ = 23559929568. Its totient is φ = 6393606240.

The previous prime is 13123003423. The next prime is 13123003451. The reversal of 13123003444 is 44430032131.

It is a super-2 number, since 2×13123003444² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225214 + ... + 277429.

It is an arithmetic number, because the mean of its divisors is an integer number (981663732).

Almost surely, 2^13123003444 is an apocalyptic number.

It is an amenable number.

13123003444 is a deficient number, since it is larger than the sum of its proper divisors (10436926124).

13123003444 is a wasteful number, since it uses less digits than its factorization.

13123003444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502815 (or 502813 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 13123003444 its reverse (44430032131), we get a palindrome (57553035575).

The spelling of 13123003444 in words is "thirteen billion, one hundred twenty-three million, three thousand, four hundred forty-four".