1213313206 has 24 divisors (see below), whose sum is σ = 2157062400. Its totient is φ = 510178032.

The previous prime is 1213313203. The next prime is 1213313279. The reversal of 1213313206 is 6023133121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213313203) by changing a digit.

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, 111606 + ... + 121993.

It is an arithmetic number, because the mean of its divisors is an integer number (89877600).

Almost surely, 2^1213313206 is an apocalyptic number.

1213313206 is a deficient number, since it is larger than the sum of its proper divisors (943749194).

1213313206 is a wasteful number, since it uses less digits than its factorization.

1213313206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233668 (or 233661 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 1213313206 is about 34832.6456933722. The cubic root of 1213313206 is about 1066.5739563737.

Adding to 1213313206 its reverse (6023133121), we get a palindrome (7236446327).

The spelling of 1213313206 in words is "one billion, two hundred thirteen million, three hundred thirteen thousand, two hundred six".