1213320424 has 16 divisors (see below), whose sum is σ = 2278523520. Its totient is φ = 605714160.

The previous prime is 1213320419. The next prime is 1213320431. The reversal of 1213320424 is 4240233121.

It is a junction number, because it is equal to n+sod(n) for n = 1213320395 and 1213320404.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 112792 + ... + 123079.

It is an arithmetic number, because the mean of its divisors is an integer number (142407720).

Almost surely, 2^1213320424 is an apocalyptic number.

It is an amenable number.

1213320424 is a deficient number, since it is larger than the sum of its proper divisors (1065203096).

1213320424 is a wasteful number, since it uses less digits than its factorization.

1213320424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236520 (or 236516 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1213320424 is about 34832.7493029189. The cubic root of 1213320424 is about 1066.5760713855.

Adding to 1213320424 its reverse (4240233121), we get a palindrome (5453553545).

The spelling of 1213320424 in words is "one billion, two hundred thirteen million, three hundred twenty thousand, four hundred twenty-four".