1213003200 has 84 divisors (see below), whose sum is σ = 3979677080. Its totient is φ = 323466240.

The previous prime is 1213003199. The next prime is 1213003229. The reversal of 1213003200 is 23003121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 121555 + ... + 131154.

Almost surely, 2^1213003200 is an apocalyptic number.

1213003200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213003200 is an abundant number, since it is smaller than the sum of its proper divisors (2766673880).

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

1213003200 is a wasteful number, since it uses less digits than its factorization.

1213003200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252734 (or 252719 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1213003200 is about 34828.1954743567. The cubic root of 1213003200 is about 1066.4831107760.

Adding to 1213003200 its reverse (23003121), we get a palindrome (1236006321).

The spelling of 1213003200 in words is "one billion, two hundred thirteen million, three thousand, two hundred".