1213361452 has 24 divisors (see below), whose sum is σ = 2193293312. Its totient is φ = 586731600.

The previous prime is 1213361437. The next prime is 1213361473. The reversal of 1213361452 is 2541633121.

It is a self number, because there is not a number n which added to its sum of digits gives 1213361452.

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 7 ways as a sum of consecutive naturals, for example, 336853 + ... + 340435.

Almost surely, 2^1213361452 is an apocalyptic number.

It is an amenable number.

1213361452 is a deficient number, since it is larger than the sum of its proper divisors (979931860).

1213361452 is a wasteful number, since it uses less digits than its factorization.

1213361452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6349 (or 6347 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 1213361452 is about 34833.3382264749. The cubic root of 1213361452 is about 1066.5880932140.

Adding to 1213361452 its reverse (2541633121), we get a palindrome (3754994573).

The spelling of 1213361452 in words is "one billion, two hundred thirteen million, three hundred sixty-one thousand, four hundred fifty-two".