1312243424 has 24 divisors (see below), whose sum is σ = 2586133368. Its totient is φ = 655447680.

The previous prime is 1312243421. The next prime is 1312243463. The reversal of 1312243424 is 4243422131.

It is a junction number, because it is equal to n+sod(n) for n = 1312243393 and 1312243402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312243421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11339 + ... + 52469.

It is an arithmetic number, because the mean of its divisors is an integer number (107755557).

Almost surely, 2^1312243424 is an apocalyptic number.

It is an amenable number.

1312243424 is a deficient number, since it is larger than the sum of its proper divisors (1273889944).

1312243424 is an equidigital number, since it uses as much as digits as its factorization.

1312243424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42138 (or 42130 counting only the distinct ones).

The product of its digits is 4608, while the sum is 26.

The square root of 1312243424 is about 36224.9006071790. The cubic root of 1312243424 is about 1094.8084355922.

Adding to 1312243424 its reverse (4243422131), we get a palindrome (5555665555).

The spelling of 1312243424 in words is "one billion, three hundred twelve million, two hundred forty-three thousand, four hundred twenty-four".