1213344424 has 16 divisors (see below), whose sum is σ = 2277349920. Its totient is φ = 606051120.

The previous prime is 1213344421. The next prime is 1213344439. The reversal of 1213344424 is 4244433121.

It is a junction number, because it is equal to n+sod(n) for n = 1213344392 and 1213344401.

It is not an unprimeable number, because it can be changed into a prime (1213344421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69282 + ... + 85009.

It is an arithmetic number, because the mean of its divisors is an integer number (142334370).

Almost surely, 2^1213344424 is an apocalyptic number.

It is an amenable number.

1213344424 is a deficient number, since it is larger than the sum of its proper divisors (1064005496).

1213344424 is a wasteful number, since it uses less digits than its factorization.

1213344424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155280 (or 155276 counting only the distinct ones).

The product of its digits is 9216, while the sum is 28.

The square root of 1213344424 is about 34833.0938045991. The cubic root of 1213344424 is about 1066.5831037837.

Adding to 1213344424 its reverse (4244433121), we get a palindrome (5457777545).

The spelling of 1213344424 in words is "one billion, two hundred thirteen million, three hundred forty-four thousand, four hundred twenty-four".