123312001424 has 20 divisors (see below), whose sum is σ = 239501164620. Its totient is φ = 61505249280.

The previous prime is 123312001381. The next prime is 123312001447. The reversal of 123312001424 is 424100213321.

It can be written as a sum of positive squares in 2 ways, for example, as 119807361424 + 3504640000 = 346132^2 + 59200^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 123312001424.

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, 9415217 + ... + 9428304.

It is an arithmetic number, because the mean of its divisors is an integer number (11975058231).

Almost surely, 2^123312001424 is an apocalyptic number.

It is an amenable number.

123312001424 is a deficient number, since it is larger than the sum of its proper divisors (116189163196).

123312001424 is a wasteful number, since it uses less digits than its factorization.

123312001424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18843938 (or 18843932 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 123312001424 its reverse (424100213321), we get a palindrome (547412214745).

The spelling of 123312001424 in words is "one hundred twenty-three billion, three hundred twelve million, one thousand, four hundred twenty-four".