1213303600 has 120 divisors (see below), whose sum is σ = 3115715760. Its totient is φ = 452444160.

The previous prime is 1213303589. The next prime is 1213303627. The reversal of 1213303600 is 63033121.

It is a super-3 number, since 3×1213303600³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 767611 + ... + 769189.

It is an arithmetic number, because the mean of its divisors is an integer number (25964298).

Almost surely, 2^1213303600 is an apocalyptic number.

1213303600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1213303600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1557857880).

1213303600 is an abundant number, since it is smaller than the sum of its proper divisors (1902412160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213303600 is a wasteful number, since it uses less digits than its factorization.

1213303600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1727 (or 1716 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1213303600 is about 34832.5078052098. The cubic root of 1213303600 is about 1066.5711416191.

Adding to 1213303600 its reverse (63033121), we get a palindrome (1276336721).

The spelling of 1213303600 in words is "one billion, two hundred thirteen million, three hundred three thousand, six hundred".