3123113212544 has 32 divisors (see below), whose sum is σ = 6700429191540. Its totient is φ = 1441436866560.

The previous prime is 3123113212523. The next prime is 3123113212553. The reversal of 3123113212544 is 4452123113213.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3053015354944 + 70097857600 = 1747288^2 + 264760^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×3123113212544² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 3123113212544.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 938433797 + ... + 938437124.

Almost surely, 2^{3123113212544} is an apocalyptic number.

It is an amenable number.

3123113212544 is an abundant number, since it is smaller than the sum of its proper divisors (3577315978996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3123113212544 is a wasteful number, since it uses less digits than its factorization.

3123113212544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876870948 (or 1876870936 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

Adding to 3123113212544 its reverse (4452123113213), we get a palindrome (7575236325757).

The spelling of 3123113212544 in words is "three trillion, one hundred twenty-three billion, one hundred thirteen million, two hundred twelve thousand, five hundred forty-four".