123135023344 has 20 divisors (see below), whose sum is σ = 238597088680. Its totient is φ = 61561581120.

The previous prime is 123135023329. The next prime is 123135023353. The reversal of 123135023344 is 443320531321.

It is a happy number.

It is a congruent number.

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, 196899 + ... + 533890.

It is an arithmetic number, because the mean of its divisors is an integer number (11929854434).

Almost surely, 2^123135023344 is an apocalyptic number.

It is an amenable number.

123135023344 is a deficient number, since it is larger than the sum of its proper divisors (115462065336).

123135023344 is a wasteful number, since it uses less digits than its factorization.

123135023344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741328 (or 741322 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 123135023344 its reverse (443320531321), we get a palindrome (566455554665).

The spelling of 123135023344 in words is "one hundred twenty-three billion, one hundred thirty-five million, twenty-three thousand, three hundred forty-four".