123031424 has 16 divisors (see below), whose sum is σ = 245101920. Its totient is φ = 61515648.

The previous prime is 123031421. The next prime is 123031451. The reversal of 123031424 is 424130321.

It is a tau number, because it is divible by the number of its divisors (16).

It is a zygodrome in base 5.

It is a junction number, because it is equal to n+sod(n) for n = 123031396 and 123031405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123031421) by changing a digit.

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 as a sum of consecutive naturals, namely, 480464 + ... + 480719.

It is an arithmetic number, because the mean of its divisors is an integer number (15318870).

Almost surely, 2^123031424 is an apocalyptic number.

It is an amenable number.

123031424 is a deficient number, since it is larger than the sum of its proper divisors (122070496).

123031424 is an frugal number, since it uses more digits than its factorization.

123031424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961197 (or 961185 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 123031424 is about 11091.9531192662. The cubic root of 123031424 is about 497.3613313514.

Adding to 123031424 its reverse (424130321), we get a palindrome (547161745).

The spelling of 123031424 in words is "one hundred twenty-three million, thirty-one thousand, four hundred twenty-four".