1312213206 has 8 divisors (see below), whose sum is σ = 2624426424. Its totient is φ = 437404400.

The previous prime is 1312213193. The next prime is 1312213213. The reversal of 1312213206 is 6023122131.

1312213206 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

1312213206 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109351095 + ... + 109351106.

It is an arithmetic number, because the mean of its divisors is an integer number (328053303).

Almost surely, 2^1312213206 is an apocalyptic number.

1312213206 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1312213206 is a wasteful number, since it uses less digits than its factorization.

1312213206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218702206.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1312213206 is about 36224.4835159868. The cubic root of 1312213206 is about 1094.8000318731.

Adding to 1312213206 its reverse (6023122131), we get a palindrome (7335335337).

The spelling of 1312213206 in words is "one billion, three hundred twelve million, two hundred thirteen thousand, two hundred six".