123113144 has 48 divisors (see below), whose sum is σ = 289993200. Its totient is φ = 47963520.

The previous prime is 123113131. The next prime is 123113147. The reversal of 123113144 is 441311321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123113147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2309 + ... + 15860.

It is an arithmetic number, because the mean of its divisors is an integer number (6041525).

Almost surely, 2^123113144 is an apocalyptic number.

123113144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

123113144 is an abundant number, since it is smaller than the sum of its proper divisors (166880056).

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

123113144 is a wasteful number, since it uses less digits than its factorization.

123113144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18204 (or 18189 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

The square root of 123113144 is about 11095.6362593589. The cubic root of 123113144 is about 497.4714261848.

Adding to 123113144 its reverse (441311321), we get a palindrome (564424465).

The spelling of 123113144 in words is "one hundred twenty-three million, one hundred thirteen thousand, one hundred forty-four".